Add ITS stuck-pixel CCDB object output

[JaehyeokRyu]

This PR adds an ITS-only StuckPixels CCDB payload to the ITSMFT dead-map builder workflow.

Main changes:

• collect RepeatingPixel errors from the ErrorInfo input into a dedicated StuckPixelData object;
• publish the StuckPixelData object as a new StuckPixels CCDB payload;
• optionally write the same information as a local ROOT TTree for inspection/debugging;
• keep the new input/output path ITS-only, leaving the MFT workflow unaffected.

The existing TimeDeadMap behavior is kept unchanged.

[shahor02]

Thanks, could you also fix the formatting problems?

[f3sch]

approving to start CI

[alibuild]

Error while checking build/O2/fullCI_slc9 for 406d853 at 2026-06-05 12:37:

## sw/BUILD/O2-latest/log
/sw/SOURCES/O2/slc9_x86-64-slc9_x86-64/0/Detectors/ITSMFT/common/workflow/src/DeadMapBuilderSpec.cxx:486:22: error: no matching function for call to 'o2::itsmft::ITSMFTDeadMapBuilder::PrepareOutputCcdb(o2::framework::EndOfStreamContext*)'
ninja: build stopped: subcommand failed.

Full log here.

[f3sch]

@JaehyeokRyu CI build failures are genuine and would need to be fixed

[shahor02]

Approving for CI