fix(ivy): ensure that changes to component resources trigger incremental builds (#30954)

Optimizations to skip compiling source files that had not changed
did not account for the case where only a resource file changes,
such as an external template or style file.

Now we track such dependencies and trigger a recompilation
if any of the previously tracked resources have changed.

This will require a change on the CLI side to provide the list of
resource files that changed to trigger the current compilation by
implementing `CompilerHost.getModifiedResourceFiles()`.

Closes #30947

PR Close #30954

packages/compiler-cli/src/main.ts

@@ -24,7 +24,8 @@ export function main(
     args: string[], consoleError: (s: string) => void = console.error,
     config?: NgcParsedConfiguration, customTransformers?: api.CustomTransformers, programReuse?: {
       program: api.Program | undefined,
-    }): number {
+    },
+    modifiedResourceFiles?: Set<string>): number {
   let {project, rootNames, options, errors: configErrors, watch, emitFlags} =
       config || readNgcCommandLineAndConfiguration(args);
   if (configErrors.length) {
@@ -45,7 +46,7 @@ export function main(
     options,
     emitFlags,
     oldProgram,
-    emitCallback: createEmitCallback(options), customTransformers
+    emitCallback: createEmitCallback(options), customTransformers, modifiedResourceFiles
   });
   if (programReuse !== undefined) {
     programReuse.program = program;