transient CI test failure

[lalitb]

Link - https://github.com/open-telemetry/opentelemetry-rust/actions/runs/13442496505/job/37560085087?pr=2680

---- layer::tests::tracing_appender_inside_tracing_crate_context stdout ----

thread 'layer::tests::tracing_appender_inside_tracing_crate_context' panicked at opentelemetry-appender-tracing/src/layer.rs:551:9:
assertion left == right failed
left: 3
right: 2
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

failures:
layer::tests::tracing_appender_inside_tracing_crate_context

test result: FAILED. 4 passed; 1 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.00s

[lalitb]

#2719 fixes it.