#3591764: Make Canvas test suite pass on 11.4; drop support for 11.2

Drupal 11.4 compatibility — MR overview

Makes Canvas pass on Drupal 11.4 while keeping 11.3 green (both run in CI), and bumps the minimum to ^11.3 (drops 11.2). Almost all changes are test expectations reacting to upstream core changes; two are product fixes.

Canvas-only changes (not forced by a specific core issue)

• Version-gating style: >= 11.4 checks (with the 11.3 path as the special case) so the legacy code is easy to grep and delete once 11.3 support is dropped.
• Minimum core ^11.3; all 11.2 references removed.
• Reverted the temporary local article_content_type test recipe to cut MR size (added while core #3587118 was in flight; https://www.drupal.org/project/drupal/releases/11.4.1 then allowed reverting).

Testing

• CI runs phpunit (11.3 …) and phpunit (11.4 …); both must stay green.
• Verified locally on real 11.3.10 and 11.4.0 installs.

Upstream core changes that forced Canvas to change

Each row: Canvas area, the core issue, the core commit, its change record, and the Canvas impact.

Ordered by impact (product/runtime changes first, then by breadth of the test surface touched). ~LoC = approximate Canvas lines changed (insertions + deletions across the relevant commits).

#	Canvas area	~LoC	Core issue	Commit	CR	Canvas impact (<50 words)
1	Content templates (Field UI integration) — product	~40	#3564234 Display-mode overview page	987768ba	#3574383	"Manage display" is now a display-builder-agnostic overview (route entity.entity_view_display_overview.node) + an "Overview" tab. Product: ContentTemplateHooks::menuLocalTasksAlter() adds ContentTemplate cacheability on that route. CanvasTemplateDisplayTest accounts for the extra tab.
2	Auto-save (Internal HTTP API) — product	~25	#1499532 Respect explicit path alias langcode	6c3a9c494ee	⚠️ missing!	The path widget dropped its langcode element. ApiLayoutControllerPatchTest drops path[0][langcode]. Also surfaced a Canvas bug — product: AutoSaveManager::normalizeEntity() now ignores empty path aliases, avoiding spurious auto-saves.
3	Config entities & validation (Data model)	~115	#3555534 symfony/validator 7.4: init constraint options in constructor	2f828800373	#3554746	ImmutableProperties is now declared/read as nested ['properties' => [...]]. Canvas config entities declare it nested; validation tests read ['properties'].
4	Internal HTTP API (shared test infra)	~65	#3451483 Dynamic Page Cache header for 4xx/5xx	b00e9a89eab	#3584640	4xx/5xx now report UNCACHEABLE (<status>). HttpApiTestBase version-gates the expected X-Drupal-Dynamic-Cache: on <11.4, 401/403 (thrown before the subscriber) expect no header, other 4xx/5xx expect UNCACHEABLE (no cacheability).
5	Functional test setup	~15	#3587118 Remove content types from standard profile	b1939f63c86	#3590571	The article node type is no longer installed by the standard profile. EntityFormControllerTest creates it (with an image field so the form is multipart/form-data).
6	Config validation (field default values)	~10	#3541535 field_config_base fully validatable	b9da335854b	⚠️ missing!	Field config is now FullyValidatable, so a component_tree default value's missing keys emit extra "is a required key because field_type is component_tree" errors. DefaultFieldValueTest version-gates the expected messages.
7	Page variant & cacheability	~35	#3341042 Only the list cache tag for block config entities	2db4214058a	⚠️ missing!	Blocks now expose only config:block_list, dropping per-block config:block.block.* and block_view. CanvasPageVariantTest / CanvasPageVariantEnableTest version-gate those tags.
8	Component sources (Block)	~50	#3547808 label_display value (+ #3555534/#3555535 constraint reformatting)	b59cf67292f	⚠️ missing!	11.4 changed the block.settings.* config schema, so block component version hashes differ. ComponentInputsEvolutionTest + BlockComponentTreeSchemaUpdateTestTrait hardcode per-version hashes.
9	Component sources (code components) & prop shapes	~50	#3352063 SDC schema $ref references (+ #3554720)	2055107f551	#3591541	ComponentMetadata now emits object-prop example values in the schema's declared properties order (src, alt, width, height) rather than authored order. JsComponentTest version-gates the resolved image key order.
10	Shape matching (field props)	~10	#3066751 resolvable_uri on LinkItem	014ef571d6d	#3143736	LinkItem gained a computed resolvable_uri property (unmappable to a field prop source). FieldInstanceSupportTest marks it known-unsupported and version-gates the support ratio.
11	Component sources (SDC discovery)	~30	#3559156 Support Twig's CVA function	134cf9f7a9d	#3581193	Adds cva + input example components to the sdc_theme_test theme. SingleDirectoryComponentTest discovers them (excluded from the detailed dependent assertions).
12	Test fixtures	~55	#3587564 Move search from node to Search module	fa9f7873fdb	#3590298	The search_index / search_result view modes are gone. Test fixtures / expected view-mode lists updated.

Closes #3591764