refactor(compiler): add span to TemplateBinding (#12792)

fix(compiler): corrected error location for implicit templates expressions

modules/@angular/compiler/src/expression_parser/ast.ts

@@ -204,7 +204,7 @@ export class ASTWithSource extends AST {
 
 export class TemplateBinding {
   constructor(
-      public key: string, public keyIsVar: boolean, public name: string,
+      public span: ParseSpan, public key: string, public keyIsVar: boolean, public name: string,
       public expression: ASTWithSource) {}
 }