feat: Allow event name to be provided to IsEnabled check in Logger

[cijothomas]

Followup to #2735, this PR adds an additional parameter (event name) to be passed to the event_enabled method, allowing consumer to leverage this additional information.
EventName is part of tracing metadata, so there is no extra cost to obtain it.

Modified SdkLogger to pass the name received to the processor, instead of passing scope.name. (Scope.name was empty due to 2735, so it no longer makes sense to pass it. Even without 2735, it was not useful, as scope-name was just the hardcoded crate name of the appender, not particularly useful!)

(Note: EventEnabled is still under experimental feature flag.)

[codecov]

Codecov Report

Attention: Patch coverage is 92.64706% with 5 lines in your changes missing coverage. Please review.

Project coverage is 79.5%. Comparing base (88cae2c) to head (8670b09).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
opentelemetry-appender-tracing/src/layer.rs	94.8%	3 Missing ⚠️
opentelemetry-sdk/src/logs/export.rs	0.0%	1 Missing ⚠️
opentelemetry/src/logs/noop.rs	0.0%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2756   +/-   ##
=====================================
  Coverage   79.5%   79.5%           
=====================================
  Files        123     123           
  Lines      22879   22923   +44     
=====================================
+ Hits       18201   18242   +41     
- Misses      4678    4681    +3     

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