feat(js-loader): Only use es5/es6 bundles in v7 JS loader

[s1gr1d]

As the coming version of the JS SDK only uses ES2017 bundles, it is no longer necessary to differentiate between es5 and es6 bundles.

ref getsentry/sentry-javascript#10911

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.29%. Comparing base (0ce27d0) to head (1a73a88).
Report is 61 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##           master   #66303    +/-   ##
========================================
  Coverage   84.29%   84.29%            
========================================
  Files        5306     5309     +3     
  Lines      237041   237228   +187     
  Branches    41020    41039    +19     
========================================
+ Hits       199805   199982   +177     
- Misses      37017    37027    +10     
  Partials      219      219            

Files	Coverage Δ
src/sentry/api/endpoints/project_key_details.py	94.66% <ø> (ø)
src/sentry/loader/browsersdkversion.py	90.16% <ø> (ø)
src/sentry/projectoptions/defaults.py	100.00% <ø> (ø)
src/sentry/web/frontend/js_sdk_loader.py	98.14% <100.00%> (+0.01%)	⬆️

... and 48 files with indirect coverage changes

[lforst]

It would be great to add some tests to the existing loader tests for this change.

We can probably copy & paste the implementation from here:

sentry/tests/sentry/web/frontend/test_js_sdk_loader.py

Lines 85 to 100 in 6cb54b1

	@mock.patch(
	"sentry.loader.browsersdkversion.load_version_from_file", return_value=["6.19.7", "7.0.0"]
	)
	@mock.patch(
	"sentry.loader.browsersdkversion.get_selected_browser_sdk_version", return_value="7.x"
	)
	def test_equal_to_v7_returns_es5(
	self, load_version_from_file, get_selected_browser_sdk_version
	):
	settings.JS_SDK_LOADER_DEFAULT_SDK_URL = "https://browser.sentry-cdn.com/%s/bundle%s.min.js"
	self.projectkey.data = {}
	self.projectkey.save()
	resp = self.client.get(self.path)
	assert resp.status_code == 200
	self.assertTemplateUsed(resp, "sentry/js-sdk-loader.js.tmpl")
	assert b"/7.0.0/bundle.es5.min.js" in resp.content

[lforst]

I think we can leave the name of is_greater_or_equal_v7_sdk as-is. Imo it doesn't add any value renaming and that way git blame is a bit more useful.