build: update verify-imports-resolve-same to ignore module extensions (#19096)

verify-imports-resolve-same.ts script validates if the package import for
monorepo package imports the same modules, but when validating the imports
typescript either would provide .d.ts or .ts or .js file based on how it is
imported. Since .ts and .d.ts are typescript artifacts and .js is used at
runtime the extension can be safely ignored. The code to ignore the extension
was not escaping the `.` char and string replacement was failing because of it.
Update the regex to escape `.`


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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: yuth

packages/aws-cdk-lib/scripts/verify-imports-resolve-same.ts

@@ -84,7 +84,7 @@ async function compileAndResolve(fileName: string, contents: string, symbolName:
   }
 
   // Return the filename
-  const srcFile = sym.declarations?.[0].getSourceFile().fileName.replace(/.ts|.js|.d.ts/, '');
+  const srcFile = sym.declarations?.[0].getSourceFile().fileName.replace(/[.](ts|js|d\.ts)$/, '');
   if (!srcFile) {
     console.log(sym);
     throw new Error(`Symbol ${symbolName} in '${contents}' does not resolve to a source location`);