fix(scan,taint): TypeScript's limit is owned by TypeScript; a source pattern is a token

Two defects found by the cause-B rescan of the independent population (exploratory,
a retune after protocol-v1):

- `typescript_property_support_unvalidated` still reached the whole repository.
  YesWiki is a PHP application that ships a few `.ts` files, and all 1,128 of its PHP
  questions were unresolved. The limit is now owned by the TypeScript partition. A
  TypeScript project (Mockoon, Signal K) is unchanged.
- `isSourceCall`, and the method-level "reads a source" heuristics, matched source
  patterns as substrings. Flask's `request.get` therefore claimed Django's
  `request.get_host()`. wger's fix passes that host to
  `url_has_allowed_host_and_scheme`, and both fixed functions were reported as open
  redirects from it. Patterns are now matched as bounded tokens, like sinks and
  sanitizers. wger's vulnerable-pin detections rest on `request.GET`, which still
  matches.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01EmM1j46qgKMh3zqD1QMwEo

src/openultrasast/cpg/queries/vocabulary.sc

@@ -54,7 +54,7 @@
     else
       sourceMemo.getOrElseUpdate(
         c.method.fullName,
-        c.method.ast.isCall.exists(x => sourcePatterns.exists(p => x.code.contains(p)))
+        c.method.ast.isCall.exists(x => sourcePatterns.exists(p => boundedPattern(p).matcher(x.code).find()))
       )
 
   def isModelled(c: io.shiftleft.codepropertygraph.generated.nodes.Call): Boolean = {