Everywhere: Add sv suffix to strings relying on StringView(char const*)

Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).

No functional changes.

Userland/Libraries/LibGUI/ResizeCorner.cpp

@@ -30,7 +30,7 @@ static constexpr Gfx::CharacterBitmap s_resize_corner_shadows_bitmap {
     "                "
     " ## ## ## ## ## "
     " #  #  #  #  #  "
-    "                ",
+    "                "sv,
     16, 16
 };
 
@@ -50,7 +50,7 @@ static constexpr Gfx::CharacterBitmap s_resize_corner_highlights_bitmap {
     "                "
     "                "
     "  #  #  #  #  # "
-    "                ",
+    "                "sv,
     16, 16
 };