feat(toggle): change error text color for ionic theme (#30556)

Issue number: internal

---------

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## What is the current behavior?
Error text color was `ion-semantics-danger-800`

## What is the new behavior?
Error text color is now `ion-semantics-danger-900`, following design
guidelines.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

Author: OS-martacarlos

core/src/components/toggle/toggle.ionic.scss

@@ -65,11 +65,11 @@
 // ----------------------------------------------------------------
 
 .toggle-bottom .error-text {
-  color: globals.$ion-semantics-danger-800;
+  color: globals.$ion-semantics-danger-900;
 }
 
 .toggle-bottom .helper-text {
-  color: globals.$ion-primitives-neutral-800;
+  color: globals.$ion-primitives-neutral-900;
 }
 
 // Toggle Native Wrapper: Focused