Issue #1040534 by catch, Owen Barton, danreb, mikeytown2, ogi, omega8cc, xjm:...

Issue #1040534 by catch, Owen Barton, danreb, mikeytown2, ogi, omega8cc, xjm: Rewrite rules for gzipped CSS and JavaScript aggregates cause lots of lstats for files that will never exist

(cherry picked from commit a6c49dba)

.htaccess

@@ -158,12 +158,12 @@ AddEncoding gzip svgz
     # Serve gzip compressed CSS files if they exist and the client accepts gzip.
     RewriteCond %{HTTP:Accept-encoding} gzip
     RewriteCond %{REQUEST_FILENAME}\.gz -s
-    RewriteRule ^(.*)\.css $1\.css\.gz [QSA]
+    RewriteRule ^(.*css_[a-zA-Z0-9-_])\.css$ $1\.css\.gz [QSA]
 
     # Serve gzip compressed JS files if they exist and the client accepts gzip.
     RewriteCond %{HTTP:Accept-encoding} gzip
     RewriteCond %{REQUEST_FILENAME}\.gz -s
-    RewriteRule ^(.*)\.js $1\.js\.gz [QSA]
+    RewriteRule ^(.*js_[a-zA-Z0-9-_])\.js$ $1\.js\.gz [QSA]
 
     # Serve correct content types, and prevent double compression.
     RewriteRule \.css\.gz$ - [T=text/css,E=no-gzip:1,E=no-brotli:1]

core/assets/scaffold/files/htaccess

@@ -158,12 +158,12 @@ AddEncoding gzip svgz
     # Serve gzip compressed CSS files if they exist and the client accepts gzip.
     RewriteCond %{HTTP:Accept-encoding} gzip
     RewriteCond %{REQUEST_FILENAME}\.gz -s
-    RewriteRule ^(.*)\.css $1\.css\.gz [QSA]
+    RewriteRule ^(.*css_[a-zA-Z0-9-_])\.css$ $1\.css\.gz [QSA]
 
     # Serve gzip compressed JS files if they exist and the client accepts gzip.
     RewriteCond %{HTTP:Accept-encoding} gzip
     RewriteCond %{REQUEST_FILENAME}\.gz -s
-    RewriteRule ^(.*)\.js $1\.js\.gz [QSA]
+    RewriteRule ^(.*js_[a-zA-Z0-9-_])\.js$ $1\.js\.gz [QSA]
 
     # Serve correct content types, and prevent double compression.
     RewriteRule \.css\.gz$ - [T=text/css,E=no-gzip:1,E=no-brotli:1]