[Testing] Fixed Test case failure in PR 33363 - [01/05/2026] Candidate - 1 (#33384)

This pull request refines the logic for setting the search icon color in
the Android `SearchView`. This PR
#33071 set the search icon color to
transparent if no color was specified, which caused the search icon to
become invisible and led to search bar-related test failures. Now, if no
custom search icon color is provided, the icon will use the platform's
default primary text color instead of becoming transparent.

**Android SearchView icon color handling:**

* Updated `UpdateSearchIconColor` in `SearchViewExtensions.cs` to apply
the default primary text color (`TextColorPrimary`) to the search icon
when no custom color is set, instead of making it transparent.

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Before fix
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After fix
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https://github.com/user-attachments/assets/22c5dc6f-2e8a-417d-89da-afaa422c9e15
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https://github.com/user-attachments/assets/b4289eb2-7266-48a2-be12-eb0eabecb40f
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Author: TamilarasanSF4853

src/Core/src/Platform/Android/SearchViewExtensions.cs

@@ -150,9 +150,13 @@ internal static void UpdateSearchIconColor(this SearchView searchView, ISearchBa
 				if (image?.Drawable is not null)
 				{
 					if (searchBar.SearchIconColor is not null)
+					{
 						SafeSetTint(image, searchBar.SearchIconColor.ToPlatform());
-					else
-						SafeSetTint(image, Color.Transparent);
+					}
+					else if (TryGetDefaultStateColor(searchView, AAttribute.TextColorPrimary, out var color))
+					{
+						SafeSetTint(image, color);
+					}
 				}
 			}
 		}