An aborted parent no longer gets a separate never-called stub per method:
mountRecordedHistory returns its hoisted openRun (it answers false before
reading later state), and mountPromptBlocks returns one shared no-op for
update, setState, setTitle and dispose. This keeps the history.mjs and
prompt-blocks.mjs function-coverage floors (98) without lowering them.
Tests: test:coverage (Chromium and touch, 922 workflows) passes for all
61 files; it failed before on history.mjs 94.44 and prompt-blocks.mjs
93.75 function coverage.
Vito Sansevero
61dcf6305a