Replace once_cell::Lazy with std::sync::OnceLock for global Initialization in otel-sdk crate

[lalitb]

Changes

changes similar to #2326 for otel-sdk.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[lalitb]

The CI build is failing unrelated to this PR:

  Compiling sysinfo v0.30.13
error[E0599]: no method named `len` found for type `i8` in the current scope
   --> /Users/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/sysinfo-0.30.13/src/unix/apple/macos/process.rs:436:53
    |
436 |         Some(node.vip_path.len() * node.vip_path[0].len()),
    |                                                     ^^^
    |
help: there is a method `le` with a similar name, but with different arguments
   --> /rustc/f6e511eec7342f59a25f7c0534f1dbea00d01b14/library/core/src/cmp.rs:1196:5

For more information about this error, try `rustc --explain E0599`.
error: could not compile `sysinfo` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...

Have raised a bug for sysinfo for now - GuillaumeGomez/sysinfo#1392

[hdost]

One less dependency 🤘

[codecov]

Codecov Report

Attention: Patch coverage is 74.66667% with 19 lines in your changes missing coverage. Please review.

Project coverage is 79.5%. Comparing base (8e6b479) to head (eee4985).
Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
opentelemetry-sdk/src/logs/log_emitter.rs	0.0%	10 Missing ⚠️
opentelemetry-sdk/src/propagation/trace_context.rs	0.0%	5 Missing ⚠️
opentelemetry-sdk/src/propagation/baggage.rs	0.0%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #2342     +/-   ##
=======================================
- Coverage   79.5%   79.5%   -0.1%     
=======================================
  Files        123     123             
  Lines      21381   21395     +14     
=======================================
+ Hits       17003   17012      +9     
- Misses      4378    4383      +5     

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