feat(color): Add g24_rec709_scene interop ID and use consistently

[brechtvl]

Description

This was added in the CIF texture color space recommendation 1.1.

It was already used in PNG read and DPX. Now add in PNG write, TGA and RLA as well for consistency. Also fix wrong g22_rec709 and g18_rec709 without _scene suffix in TGA and RLA.

No matching CICP was added so g24_rec709_display continues to be the interop ID on read. Both for compatibility, and because that CICP is already ambiguous (now explained in a comment).

Ref #4980

Tests

Tests added to check for the presence of this interop ID.

Checklist:

• I have read the guidelines on contributions and code review procedures.
• I have read the Policy on AI Coding Assistants
  and if I used AI coding assistants, I have an Assisted-by: TOOL / MODEL
  line in the pull request description above.
• I have updated the documentation if my PR adds features or changes
  behavior.
• I am sure that this PR's changes are tested in the testsuite.
• I have run and passed the testsuite in CI before submitting the
  PR, by pushing the changes to my fork and seeing that the automated CI
  passed there. (Exceptions: If most tests pass and you can't figure out why
  the remaining ones fail, it's ok to submit the PR and ask for help. Or if
  any failures seem entirely unrelated to your change; sometimes things break
  on the GitHub runners.)
• My code follows the prevailing code style of this project and I
  fixed any problems reported by the clang-format CI test.
• If I added or modified a public C++ API call, I have also amended the
  corresponding Python bindings. If altering ImageBufAlgo functions, I also
  exposed the new functionality as oiiotool options.

[brechtvl]

CC @zachlewis