fix(components): include mode classes on components for use in shadow (#17838)

- removes mode-less component classes from the internal CSS, use element instead
- adds mode specific classes `md` or `ios` for styling inside of shadow components
- adds e2e test that verifies mode classes exist on all ionic components, plus checks for specific classes that the components need for internal styling

fixes #17608

core/src/components/title/title.scss

@@ -62,4 +62,4 @@
 
   overflow: hidden;
   pointer-events: auto;
-}
+}

core/src/components/title/title.tsx

@@ -28,10 +28,13 @@ export class ToolbarTitle implements ComponentInterface {
 
   hostData() {
     const mode = this.getMode();
+
     return {
       class: {
+        [`${mode}`]: true,
+        [`title-${mode}`]: true,
+
         ...createColorClasses(this.color),
-        [`title-${mode}`]: true
       }
     };
   }