fix(compiler): absolute source span for template attribute expressions (#33189)

Prior to this commit, the absolute spans (relative to template source
file rather than the start of an expression) of expressions in a
template attribute like `*ngIf` were generated incorrectly, equating to
the relative spans.
This fixes the bug by passing an `absoluteOffset` parameter when parsing
template bindings.

Through some levels of indirection, this is required for the Language
Service to support text replacement in
https://github.com/angular/angular/pull/33091.

PR Close #33189

packages/compiler/test/render3/r3_ast_absolute_span_spec.ts

@@ -44,6 +44,12 @@ describe('expression AST absolute source spans', () => {
         .toContain(['condition ? true : false', new AbsoluteSourceSpan(22, 46)]);
   });
 
+  it('should provide absolute offsets of an expression in a template attribute', () => {
+    expect(humanizeExpressionSource(parse('<div *ngIf="value | async"></div>').nodes)).toContain([
+      '(value | async)', new AbsoluteSourceSpan(12, 25)
+    ]);
+  });
+
   describe('binary expression', () => {
     it('should provide absolute offsets of a binary expression', () => {
       expect(humanizeExpressionSource(parse('<div>{{1 + 2}}<div>').nodes)).toContain([

packages/compiler/test/render3/util/expression.ts

@@ -102,7 +102,10 @@ class ExpressionSourceHumanizer extends e.RecursiveAstVisitor implements t.Visit
     super.visitQuote(ast, null);
   }
 
-  visitTemplate(ast: t.Template) { t.visitAll(this, ast.children); }
+  visitTemplate(ast: t.Template) {
+    t.visitAll(this, ast.children);
+    t.visitAll(this, ast.templateAttrs);
+  }
   visitElement(ast: t.Element) {
     t.visitAll(this, ast.children);
     t.visitAll(this, ast.inputs);