feat(grid): style inputs in the context of cell (#16451)

Author: didimmova

projects/igniteui-angular/core/src/core/styles/components/combo/_combo-theme.scss

@@ -276,8 +276,8 @@
 
     .igx-input-group--disabled {
         %igx-combo__toggle-button {
-            background: var-get($theme, 'toggle-button-background-disabled') !important;
-            color: var-get($theme, 'toggle-button-foreground-disabled') !important;
+            background: var-get($theme, 'toggle-button-background-disabled');
+            color: var-get($theme, 'toggle-button-foreground-disabled');
         }
 
         %igx-combo__clear-button {

projects/igniteui-angular/core/src/core/styles/components/grid/_grid-theme.scss

@@ -292,6 +292,12 @@
             box-shadow: none !important;
             border: none !important;
         }
+
+        .igx-input-group--disabled,
+        .igx-input-group--disabled igx-prefix,
+        .igx-input-group--disabled igx-suffix {
+            color: var-get($theme, 'cell-disabled-color');
+        }
     }
 
     @if $variant != 'indigo' {
@@ -1196,6 +1202,21 @@
         align-items: center;
         outline-style: none;
 
+        @extend %cell-input-overrides;
+
+        > igx-input-group,
+        igx-combo,
+        igx-simple-combo,
+        igx-select,
+        igx-date-picker,
+        igx-time-picker {
+            height: auto;
+        }
+
+        igx-input-group {
+            background: transparent;
+        }
+
         @if $variant != 'indigo' {
             padding-inline: pad-inline(
                 map.get($grid-cell-padding-inline, 'compact'),
@@ -1411,8 +1432,6 @@
         &%grid-cell-number {
             justify-content: flex-start !important;
         }
-
-        @extend %cell-input-overrides;
     }
 
     %grid-cell--pinned {

projects/igniteui-angular/core/src/core/styles/components/input/_input-group-theme.scss

@@ -376,7 +376,7 @@
     %form-group-display--disabled {
         pointer-events: none;
         user-select: none;
-        color: var-get($theme, 'disabled-text-color') !important;
+        color: var-get($theme, 'disabled-text-color');
 
         igx-prefix,
         [igxPrefix] {
@@ -1445,7 +1445,7 @@
     %form-group-input--disabled {
         cursor: default;
 
-        color: var-get($theme, 'disabled-text-color') !important;
+        color: var-get($theme, 'disabled-text-color');
 
         &::placeholder {
             color: var-get($theme, 'disabled-placeholder-color');
@@ -1495,7 +1495,7 @@
     }
 
     %form-group-textarea--disabled {
-        color: var-get($theme, 'disabled-text-color') !important;
+        color: var-get($theme, 'disabled-text-color');
         cursor: default;
 
         &::placeholder {
@@ -2073,7 +2073,7 @@
     }
 
     %fluent-label-disabled {
-        color: var-get($theme, 'disabled-text-color') !important;
+        color: var-get($theme, 'disabled-text-color');
     }
 
     %fluent-label-filled {