fix(referrer-tagstore): fix tagstore

[RedShiba]

getsentry/self-hosted#2349
I'm using self-hosted sentry version 23.3.1 and getting the following traceback in console logs when I try to get any particular tag (e.g. >>> get('https://{sentry}/api/0/projects/{org}/{project}/tags/release/')). Seems second underscore was missed here https://github.com/getsentry/sentry/blob/master/src/sentry/snuba/referrer.py#L557

sentry-web                                  | Traceback (most recent call last):
sentry-web                                  |   File "/usr/local/lib/python3.8/site-packages/sentry/snuba/referrer.py", line 597, in validate_referrer
sentry-web                                  |     raise Exception(error_message)
sentry-web                                  | Exception: referrer tagstore.__get_tag_key_and_top_values is not part of Referrer Enum

I patched referrer.py locally and now it looks good.

Legal Boilerplate

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

[codecov]

Codecov Report

Merging #50241 (c5f7f07) into master (4ed1618) will increase coverage by 1.20%.
Report is 3 commits behind head on master.
The diff coverage is 100.00%.

❗ Current head c5f7f07 differs from pull request most recent head 1e5c7d5. Consider uploading reports for the commit 1e5c7d5 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #50241      +/-   ##
==========================================
+ Coverage   79.89%   81.10%   +1.20%     
==========================================
  Files        5027     4842     -185     
  Lines      213862   203184   -10678     
  Branches    36379    11269   -25110     
==========================================
- Hits       170861   164783    -6078     
- Misses      37761    38152     +391     
+ Partials     5240      249    -4991     

Files Changed	Coverage Δ
src/sentry/snuba/referrer.py	100.00% <100.00%> (ø)

... and 2485 files with indirect coverage changes

[github-actions]

This pull request has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you label it Status: Backlog or Status: In Progress, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀

[hubertdeng123]

/gcbrun

[hubertdeng123]

/gcbrun

[RedShiba]

thanks!