A couple of RendererWorker improvements (PR 21860 follow-up)

[Snuffleupagus]

This patch contains a couple of different, but small, improvements:

• Add a placeholder entry for rendererWorker, in the transportParams used in getDocument, to avoid having to needlessly copy the object.

• Remove pointless fallback values in the WorkerTransport constructor, since those parameters should always be available.

• Give the pdfBug parameter the correct default value in the ObjectHandler constructor.

• Always set inspectFont = null in the renderer-worker, since the FontInspector will never exist there.

[github-actions]

Reference tests

Results for 35546c2 (run, references from mozilla/pdf.js.refs@026380f231).

Platform	Status	Tests	Total runtime	Errors	Different	FBF	No reference	Report
	⚠️	1382	11m 29s	0	1	0	0	view differences
	⚠️	1382	15m 22s	0	1	0	0	view differences

The report is kept for 30 days and replaced by the next run.

Problems on Linux

TEST-UNEXPECTED-FAIL | test failed issue16114-partial | in firefox-1 | page1 round 1 | Optimized rendering differs from full rendering.

Problems on Windows

TEST-UNEXPECTED-FAIL | test failed issue16114-partial | in firefox-1 | page1 round 1 | Optimized rendering differs from full rendering.
TEST-UNEXPECTED-FAIL | test failed tracemonkey-partial-2 | in firefox-0 | page2 round 1 | Optimized rendering differs from full rendering.
TEST-UNEXPECTED-FAIL | test failed tracemonkey-partial-2 | in firefox-0 | page4 round 1 | Optimized rendering differs from full rendering.
TEST-UNEXPECTED-FAIL | test failed tracemonkey-partial-2 | in firefox-0 | page6 round 1 | Optimized rendering differs from full rendering.
TEST-UNEXPECTED-FAIL | test failed tracemonkey-partial-2 | in firefox-0 | page7 round 1 | Optimized rendering differs from full rendering.
TEST-UNEXPECTED-FAIL | test failed tracemonkey-partial-2 | in firefox-0 | page8 round 1 | Optimized rendering differs from full rendering.
TEST-UNEXPECTED-FAIL | test failed tracemonkey-partial-2 | in firefox-0 | page10 round 1 | Optimized rendering differs from full rendering.
TEST-UNEXPECTED-FAIL | test failed tracemonkey-partial-2 | in firefox-0 | page13 round 1 | Optimized rendering differs from full rendering.

[github-actions]

Viewer preview

🗑️ Viewer previews removed.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.22%. Comparing base (24de17e) to head (35546c2).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #22103   +/-   ##
=======================================
  Coverage   90.22%   90.22%           
=======================================
  Files         275      275           
  Lines       67837    67838    +1     
=======================================
+ Hits        61203    61206    +3     
+ Misses       6634     6632    -2     

Flag	Coverage Δ
browsertest	66.20% <100.00%> (+0.03%)	⬆️
fonttest	8.98% <ø> (ø)
integrationtest	70.01% <100.00%> (+<0.01%)	⬆️
unittest	59.90% <100.00%> (-0.03%)	⬇️
unittestcli	58.32% <100.00%> (+<0.01%)	⬆️

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[calixteman]

LGTM. Thank you.