fix(tokens): fix usage on components and review scss architecture (#30368)

Issue number: internal

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## What is the new behavior?
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this PR. -->

Added improvements on scss architecture, as identified on past
assessment, on multiple components.

Some of these changes resulted in snapshots differences, all reviewed
and expected:

- Button spinner - pics with no visual differences/false-positive.
- Item slider -  difference due to updated typography token.
- Item - difference as is now using correct disabled styles tokens.
- searchbar: 1px difference on horizontal margin - expected - to start
using a more rounded value from a token.
- Tab/tab-button - difference as is now using correct typography token.
- Spinner/loading - this looks like a false positive, saw no visible
differences.
- Textarea - this looks like a false positive, saw no visible
differences.
- Typography - this looks like a false positive, saw no visible
differences.

## Does this introduce a breaking change?

- [x] Yes
- [ ] No

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Co-authored-by: ionitron <hi@ionicframework.com>

core/src/components/toggle/toggle.common.scss

@@ -58,10 +58,6 @@
   width: auto;
 }
 
-:host(.ion-focused) input {
-  border: 2px solid #5e9ed6;
-}
-
 :host(.toggle-disabled) {
   pointer-events: none;
 }

core/src/components/toggle/toggle.native.scss

@@ -5,6 +5,10 @@
   z-index: $z-index-item-input;
 }
 
+:host(.ion-focused) input {
+  border: 2px solid #5e9ed6;
+}
+
 :host(.in-item) .label-text-wrapper {
   @include margin($toggle-item-label-margin-top, null, $toggle-item-label-margin-bottom, null);
 }