136503: Fixed ThemeableComponentRegistry not correctly registering Windows paths in the byBasePath Map

(cherry picked from commit 96f6908)

Author: alexandrevryghem

lint/src/util/theme-support.ts

@@ -17,6 +17,7 @@ import {
   getComponentClassName,
   isPartOfViewChild,
 } from './angular';
+import { toUnixStylePath } from './misc';
 import {
   isPartOfClassDeclaration,
   isPartOfTypeExpression,
@@ -127,7 +128,7 @@ class ThemeableComponentRegistry {
                   continue;
                 }
 
-                const basePath = resolveLocalPath((importDeclaration.moduleSpecifier as ts.StringLiteral).text, path);
+                const basePath = resolveLocalPath((importDeclaration.moduleSpecifier as ts.StringLiteral).text, toUnixStylePath(path));
 
                 themeableComponents.add({
                   baseClass,