add small test for frozen module line number table

[nascheme]

BPO	43381
Nosy	@nascheme
PRs	bpo-43381: Add frozen module co_lines() test #24712

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-03-03.00:52:30.007>
labels = ['type-feature', 'tests']
title = 'add small test for frozen module line number table'
updated_at = <Date 2021-03-03.01:01:59.365>
user = 'https://github.com/nascheme'

bugs.python.org fields:

activity = <Date 2021-03-03.01:01:59.365>
actor = 'nascheme'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2021-03-03.00:52:30.007>
creator = 'nascheme'
dependencies = []
files = []
hgrepos = []
issue_num = 43381
keywords = ['patch']
message_count = 1.0
messages = ['387989']
nosy_count = 1.0
nosy_names = ['nascheme']
pr_nums = ['24712']
priority = 'low'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue43381'
versions = []

[nascheme]

In bug bpo-43372, we didn't notice that the code for the __hello__ module was not re-generated. Things seems to be okay but the line number table was corrupted. It seems a good idea to add a small test to ensure that doesn't happen again.

I marked the test as CPython implementation specific.

[nascheme]

Tests have been added as part of gh-28664, closing.