Autodesk: Make tracked render tags subtractive to avoid syncing unnecessary rprims

[erikaharrison-adsk]

Description of Change(s)

HdDirtyList::UpdateRenderTagsAndReprSelectors will always append new render tags that will be rendered to the _trackedRenderTags. If a render tag in _trackedRenderTags is no longer used by the rendering task, it will not be removed from _trackedRenderTags. So once a render tag is added into _trackedRenderTags, in all the following rendering tasks the rprims with this render tag will always be synced, even if the task will not render these rprims.
The correct behaviour should be that this function will replace the old render tags with the new render tags.

Link to proposal (if applicable)

• N/A

Fixes Issue(s)

• N/A

Checklist

• I have created this PR based on the dev branch

• I have followed the coding conventions

• I have added unit tests that exercise this functionality (Reference:
  testing guidelines)

• I have verified that all unit tests pass with the proposed changes

• I have submitted a signed Contributor License Agreement (Reference:
  Contributor License Agreement instructions)

[jesschimein]

Filed as internal issue #USD-11023

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