PackageCommand: run verify_app_tools() after other pre-requisite commands

[rmartin16]

Got this wrong even after spending too much time thinking about it....or because I spent too much time.

Changes

The call to verify_app_tools() for PackageCommand now happens after any per-requisite commands are run.

PR Checklist:

• All new features have been tested
• All new features have been documented
• I have read the CONTRIBUTING.md file
• I will abide by the code of conduct

[freakboy3742]

Makes sense. From a quick check, publish has the same problem; publish is a no-op, but for the sake of consistency (and future sanity) it's worth cleaning this up now.

I've pushed the update; once CI passes I'm happy for this to land.

[codecov]

Codecov Report

Merging #878 (c448367) into main (9ab31c8) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Impacted Files	Coverage Δ
src/briefcase/commands/package.py	86.04% <100.00%> (ø)
src/briefcase/commands/publish.py	96.66% <100.00%> (+0.51%)	⬆️
src/briefcase/console.py	100.00% <0.00%> (ø)
src/briefcase/integrations/subprocess.py	100.00% <0.00%> (ø)
src/briefcase/commands/new.py	97.01% <0.00%> (+0.02%)	⬆️