fix(input-group): move styles to material them for lable positioning

- added `--_bundle-row` and `--_hint-row` variables for `.igx-input-group:has(:not(.igx-input-group__label))`.
- Ensured consistency across base and material theme SCSS files.

Author: desig9stein

projects/igniteui-angular/input-group/src/input-group/themes/_base.scss

@@ -520,12 +520,6 @@ $transition-timing: .25s $out-cubic;
             }
             /* stylelint-enable max-nesting-depth */
         }
-
-    }
-
-    .igx-input-group:has(:not(.igx-input-group__label)) {
-        --_bundle-row: 1;
-        --_hint-row: 2;
     }
 
     igx-combo .igx-input-group:not(.igx-input-group--disabled),

projects/igniteui-angular/input-group/src/input-group/themes/shared/material.scss

@@ -29,6 +29,11 @@ $input-bottom-spacing: rem(6px);
         --_bundle-row: 1;
         --_hint-row: 2;
     }
+	
+	.igx-input-group:has(:not(.igx-input-group__label)) {
+		--_bundle-row: 1;
+		--_hint-row: 2;
+	}
 
     row-gap: rem(4px);