diagnostics_channel: validate before channel activation - #65313
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Validate the first subscription before calling markActive(). This prevents invalid callbacks from leaving channels active and notifying native consumers without an installed subscriber. Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com> Assisted-by: codex:gpt-5.6-sol
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #65313 +/- ##
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- Coverage 90.31% 90.13% -0.19%
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Files 751 752 +1
Lines 250474 251569 +1095
Branches 47335 47269 -66
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+ Hits 226218 226750 +532
- Misses 15601 16169 +568
+ Partials 8655 8650 -5
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Fixes: #65312
Validate the first subscription before calling markActive(). This prevents invalid callbacks from leaving channels active and notifying native consumers without an installed subscriber.
Assisted-by: codex:gpt-5.6-sol