chore: Simplify tracing with servo_tracing macro (#36661) (#37497)

This pull request refactors existing tracing annotations to leverage the
new `servo_tracing::instrument` macro introduced in #36573.

Specifically, the following transformations were applied:
- Removed `#[cfg_attr(feature = "tracing", ...)]` wrappers.
- Replaced `tracing::instrument` with `servo_tracing::instrument`.
- Removed `level = "trace"`
- Removed `fields(servo_profiling = true)` from tracing attributes
however retained others like `name`. `skip type`

Closes: #36661

---------

Signed-off-by: Bhuwan Pandit <bhuwanpandit109@gmail.com>
Signed-off-by: Jonathan Schwender <55576758+jschwe@users.noreply.github.com>
Co-authored-by: Jonathan Schwender <55576758+jschwe@users.noreply.github.com>

components/layout/display_list/clip.rs

@@ -109,15 +109,7 @@ impl StackingContextTreeClipStore {
         }
     }
 
-    #[cfg_attr(
-        feature = "tracing",
-        tracing::instrument(
-            name = "StackingContextClipStore::add_for_basic_shape",
-            skip_all,
-            fields(servo_profiling = true),
-            level = "trace",
-        )
-    )]
+    #[servo_tracing::instrument(name = "StackingContextClipStore::add_for_basic_shape", skip_all)]
     fn add_for_basic_shape(
         &mut self,
         shape: BasicShape,