fix(input): use correct colors for helper/error disabled states

Author: brandyscarney

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

@@ -169,7 +169,6 @@
 // ----------------------------------------------------------------
 
 :host(.input-disabled) {
-  // color for the text within the input
   --color: #{globals.$ion-primitives-neutral-500};
   --background: #{globals.$ion-primitives-neutral-100};
   --border-color: #{globals.$ion-primitives-neutral-300};
@@ -181,7 +180,7 @@
 :host(.input-disabled:not(.ion-valid)) .input-bottom .helper-text,
 :host(.input-disabled) .input-bottom .counter,
 :host(.input-disabled) .label-text-wrapper {
-  color: globals.$ion-primitives-neutral-500;
+  color: globals.$ion-text-disabled;
 }
 
 :host(.input-disabled.has-focus.ion-valid) {
@@ -197,9 +196,7 @@
 }
 
 :host(.input-disabled.has-focus.ion-valid) .input-bottom .helper-text,
-:host(.input-disabled.ion-touched.ion-invalid) .error-text,
-:host(.input-disabled.ion-color) .input-bottom .helper-text,
-:host(.input-disabled.ion-color) .helper-text {
+:host(.input-disabled.ion-touched.ion-invalid) .error-text {
   opacity: 0.6;
 }