* fix(gdb): keep TTY verification across read-only inferior-tty inspection
The console command path cleared `inferiorTtyVerified` before dispatching
any command whose text merely mentioned `inferior-tty`, so the read-only
`show inferior-tty` query permanently revoked a persistent session's
verified output sink; no in-session path ever restored the flag, and a
later close of a live session failed detach verification with
capability_unavailable.
Exempt the exact read-only query forms (`show inferior-tty` and the MI
`-inferior-tty-show`) from the output-mutation predicate; every other
command mentioning the TTY setting keeps revoking, so mutating commands
still fail closed and detach keeps re-reading the live TTY before
detaching. Cover the query forms, composite commands, and the
inspect-then-close detach path with regression tests.
Fixes#5099
* test(gdb): classify show inferior-tty in the one-shot table and rename the TTY classification table
- Add a 'show inferior-tty' row to the 'classifies one-shot GDB
commands' table: the read-only query no longer invalidates the detach
proof, a user-visible one-shot behavior change.
- Rename the 'classifies read-only inferior TTY queries as non-mutating'
table to 'classifies inferior TTY commands' since two of its rows are
mutation cases.
- Assert via the existing recorded-commands array that the inspected
'show inferior-tty' text is actually dispatched, and add an
execute-path assertion that the MI '-inferior-tty-show' form leaves
the verified-sink flag intact (defensive exemption: REA's own MI calls
do not route through this gate).
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Co-authored-by: akushonkamen <[email protected]>
