fix(inputs): address review comments

Author: SisIvanova

src/components/date-picker/themes/shared/date-picker.indigo.scss

@@ -33,7 +33,7 @@ $input-theme: input-theme.$indigo;
     }
 }
 
-:host(:not([invalid])[readonly]) {
+:host([readonly]) {
     igc-date-time-input::part(container) {
         border-color: var-get($theme, 'disabled-text-color');
     }

src/components/date-range-picker/themes/shared/date-range-picker.indigo.scss

@@ -30,7 +30,7 @@ $theme: $indigo;
     padding: rem(8px) rem(16px);
 }
 
-:host(:not([invalid])[readonly]) {
+:host([readonly]) {
     igc-input::part(container),
     igc-date-time-input::part(container) {
         border-color: var-get($theme, 'disabled-text-color');

src/components/input/themes/shared/input.material.scss

@@ -459,16 +459,11 @@ input:placeholder-shown + [part='notch'] [part='label'],
 
         input:not(:placeholder-shown) + [part='notch'] {
             border-width: $active-border-width;
+            border-color: var-get($theme, 'focused-border-color');
         }
     }
 }
 
-:host(:not([type='search'],[invalid])[readonly][outlined]:focus-within) {
-    input:not(:placeholder-shown) + [part='notch'] {
-        border-color: var-get($theme, 'focused-border-color');
-    }
-}
-
 :host(:not([type='search'])[outlined]:hover) {
     [part='notch'],
     [part='start'],