feat(ivy): provide support for map-based host bindings for [style] and [class] (#28246)

Up until now, `[style]` and `[class]` bindings (the map-based ones) have only
worked as template bindings and have not been supported at all inside of host
bindings. This patch ensures that multiple host binding sources (components and
directives) all properly assign style values and merge them correctly in terms
of priority.

Jira: FW-882

PR Close #28246

packages/compiler/src/template_parser/template_parser.ts

@@ -897,4 +897,4 @@ function isEmptyExpression(ast: AST): boolean {
     ast = ast.ast;
   }
   return ast instanceof EmptyExpr;
-}
+}