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/flow/inline/mod.rs

@@ -1634,15 +1634,7 @@ impl From<&InheritedText> for SegmentContentFlags {
 }
 
 impl InlineFormattingContext {
-    #[cfg_attr(
-        feature = "tracing",
-        tracing::instrument(
-            name = "InlineFormattingContext::new_with_builder",
-            skip_all,
-            fields(servo_profiling = true),
-            level = "trace",
-        )
-    )]
+    #[servo_tracing::instrument(name = "InlineFormattingContext::new_with_builder", skip_all)]
     pub(super) fn new_with_builder(
         builder: InlineFormattingContextBuilder,
         layout_context: &LayoutContext,