fix(checkbox, input, select, textarea): uniform invalid border color for ionic theme (#30838)

Issue number: resolves #

---------

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issue. -->

<!-- Please try to limit your pull request to one type (bugfix, feature,
etc). Submit multiple pull requests if needed. -->

This pull request updates the error text color handling for several form
components to use a consistent variable, improving maintainability and
visual consistency. The changes also update the focus ring color for
invalid checkboxes to align with the new variable naming.

**Error text color standardization:**

* Updated `.error-text` color in `checkbox.ionic.scss` to use
`globals.$ion-text-danger` instead of
`globals.$ion-semantics-danger-800`.
* Added `.error-text` color rule using `globals.$ion-text-danger` to
`input.ionic.scss`, `select.ionic.scss`, and `textarea.ionic.scss`.
[[1]](diffhunk://#diff-4d89e41650632cecdd15dbe6b2ef5ad30d100788ecd786dd97a990aaf1ab08d9R274-R277)
[[2]](diffhunk://#diff-030647f0cfb9ca6f042e9d7114611c7076a7c01af73076d1db05cc881b40ddf7R39-R42)
[[3]](diffhunk://#diff-45914a3d091d2c33732c1bdfbd74ce4375d12c6b23811c211a038d829e110886R149-R152)

**Focus ring color update:**

* Changed the invalid checkbox focus ring color variable from
`globals.$ion-border-focus-error` to
`globals.$ion-border-danger-default` in `checkbox.ionic.scss`.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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  2. Update the BREAKING.md file with the breaking change.
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---------

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

core/src/components/checkbox/checkbox.ionic.scss

@@ -117,7 +117,7 @@ input {
 }
 
 .checkbox-bottom .error-text {
-  color: globals.$ion-semantics-danger-800;
+  color: globals.$ion-text-danger;
 }
 
 .checkbox-bottom .helper-text {
@@ -198,7 +198,7 @@ input {
 // Ionic Design Checkbox Invalid
 // --------------------------------------------------
 :host(.ion-invalid) {
-  --focus-ring-color: #{globals.$ion-border-focus-error};
+  --focus-ring-color: #{globals.$ion-border-danger-default};
 }
 
 :host(.ion-invalid:not(.checkbox-checked)),

core/src/components/input/input.ionic.scss

@@ -271,6 +271,10 @@
   color: globals.$ion-primitives-neutral-800;
 }
 
+.input-bottom .error-text {
+  color: globals.$ion-text-danger;
+}
+
 :host(.has-focus.ion-valid) .helper-text {
   color: var(--highlight-color-valid);
 }

core/src/components/select/select.ionic.scss

@@ -36,6 +36,10 @@
   color: globals.$ion-primitives-neutral-800;
 }
 
+.select-bottom .error-text {
+  color: globals.$ion-text-danger;
+}
+
 .select-text {
   min-width: globals.$ion-space-400;
 

core/src/components/textarea/textarea.ionic.scss

@@ -146,6 +146,10 @@ ion-icon {
   color: globals.$ion-text-subtlest;
 }
 
+.textarea-bottom .error-text {
+  color: globals.$ion-text-danger;
+}
+
 :host(.has-focus.ion-valid) .helper-text {
   color: var(--highlight-color-valid);
 }