Handle ValueError in scope resets

[sl0thentr0py]

Description

when async generators throw a GeneratorExit we end up with

ValueError: <Token var=<ContextVar name='current_scope' default=None at 0x7f04cf05fb50> at 0x7f04ceb17340> was created in a different Context

so just catch that and rely on GC to cleanup the contextvar since we can't be smarter than that anyway for this case.

Issues

• resolves: Using isolation scopes with multiple depths of generators causes Token was created in different Context error #4925
• resolves: PY-1886

[linear]

PY-1886 Using isolation scopes with multiple depths of generators causes Token was created in different Context error