Emitting cc.scope and memory form for loops in the Python bridge

[sacpis]

Pulled out of fix_python_bridge_issues (#5233 follow-on) so the bridge fixes can be reviewed on their own.

The bridge never emitted cc.scope, so add-deallocs had nothing to attach to and a qubit allocated in a loop body or an if branch was never freed. It also pre-lifted the for induction variable to an SSA iteration argument, doing memtoreg's job by hand.

[schweitzpgi]

Is this not a duplicate of #5251?

[github-actions]

CI Summary (push) — ✅ passed

Run #33017006422 · ✅ 7 · ⏩ 7 · ❌ 0 · ⛔ 0

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Job	Result
binaries	⏩ skipped
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changes	✅ success
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config_source_build	⏩ skipped
config_wheeldeps	✅ success
devdeps	✅ success
docker_image	⏩ skipped
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metadata	✅ success
python_metapackages	⏩ skipped
python_wheels	⏩ skipped
source_build	⏩ skipped
wheeldeps	✅ success

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Job
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python_wheels
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[sacpis]

Yes overlapping, and that's my mistake. That branch was the whole of #5251 minus the parts already split out, which isn't the split you asked for.