fix: apprise-logger-level-normalization

[hemantmm]

closes: #19390

Explicitly set the apprise logger level to match the root logger when unset or lower than desired.

[codspeed-hq]

Merging this PR will not alter performance

✅ 2 untouched benchmarks

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_{Comparing hemantmm:apprise-logger-level-normalization (fdfbdd8) with main (2bbff78)}