fix(core): consistently use ng:/// for sourcemap URLs (#29826)

Currently, in jit mode, `ngInjectableDef`, `ngDirectiveDef`, `ngPipeDef` and `ngModuleDef` use `ng://`,
which display them in the top domain in Chrome Dev Tools, whereas `ngComponentDef` uses `ng:///` which display components in a separate domain.

You can currently see:

```
AppModule
UserService
ng://
|_ AppComponent
   |_ template.html
|_ AppComponent.js
...
```

This commits replaces all `ng://` with `ng:///` to display every Angular entity in the `ng://` domain.

```
ng://
|_ AppModule
|_ UserService
|_ AppComponent
...
```

PR Close #29826

packages/core/src/di/jit/injectable.ts

@@ -71,7 +71,7 @@ export function compileInjectable(type: Type<any>, srcMeta?: Injectable): void {
           throw new Error(`Unreachable state.`);
         }
         def = getCompilerFacade().compileInjectable(
-            angularCoreDiEnv, `ng://${type.name}/ngInjectableDef.js`, compilerMeta);
+            angularCoreDiEnv, `ng:///${type.name}/ngInjectableDef.js`, compilerMeta);
       }
       return def;
     },

packages/core/src/render3/jit/directive.ts

@@ -123,7 +123,7 @@ export function compileDirective(type: Type<any>, directive: Directive): void {
     get: () => {
       if (ngDirectiveDef === null) {
         const name = type && type.name;
-        const sourceMapUrl = `ng://${name}/ngDirectiveDef.js`;
+        const sourceMapUrl = `ng:///${name}/ngDirectiveDef.js`;
         const compiler = getCompilerFacade();
         const facade = directiveMetadata(type as ComponentType<any>, directive);
         facade.typeSourceSpan = compiler.createParseSourceSpan('Directive', name, sourceMapUrl);

packages/core/src/render3/jit/module.ts

@@ -107,7 +107,7 @@ export function compileNgModuleDefs(moduleType: NgModuleType, ngModule: NgModule
     get: () => {
       if (ngModuleDef === null) {
         ngModuleDef = getCompilerFacade().compileNgModule(
-            angularCoreEnv, `ng://${moduleType.name}/ngModuleDef.js`, {
+            angularCoreEnv, `ng:///${moduleType.name}/ngModuleDef.js`, {
               type: moduleType,
               bootstrap: flatten(ngModule.bootstrap || EMPTY_ARRAY, resolveForwardRef),
               declarations: declarations.map(resolveForwardRef),
@@ -142,7 +142,7 @@ export function compileNgModuleDefs(moduleType: NgModuleType, ngModule: NgModule
           ],
         };
         ngInjectorDef = getCompilerFacade().compileInjector(
-            angularCoreEnv, `ng://${moduleType.name}/ngInjectorDef.js`, meta);
+            angularCoreEnv, `ng:///${moduleType.name}/ngInjectorDef.js`, meta);
       }
       return ngInjectorDef;
     },

packages/core/src/render3/jit/pipe.ts

@@ -21,7 +21,7 @@ export function compilePipe(type: Type<any>, meta: Pipe): void {
       if (ngPipeDef === null) {
         const typeName = type.name;
         ngPipeDef =
-            getCompilerFacade().compilePipe(angularCoreEnv, `ng://${typeName}/ngPipeDef.js`, {
+            getCompilerFacade().compilePipe(angularCoreEnv, `ng:///${typeName}/ngPipeDef.js`, {
               type: type,
               typeArgumentCount: 0,
               name: typeName,