Add Runtime Api version to metadata

[re-gius]

The runtime API implemented version is not explicitly shown in metadata, so here we add it to improve developer experience.
We need to bump frame-metadata and merkleized-metadata to allow this new feature.

This closes #7352 .

Refactor: also changing all the occurrences of ViewFunctionMethod to just ViewFunction for metadata types.

[re-gius]

/cmd prdoc --audience runtime_dev --bump minor

[paritytech-workflow-stopper]

All GitHub workflows were cancelled due to failure one of the required jobs.
Failed workflow url: https://github.com/paritytech/polkadot-sdk/actions/runs/13501831123
Failed job name: test-doc

[jsdw]

LGTM, thank you!

[paritytech-cmd-bot-polkadot-sdk]

Created backport PR for stable2407:

• [stable2407] Backport #7607 #7715 with remaining conflicts!

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-7607-to-stable2407
git worktree add --checkout .worktree/backport-7607-to-stable2407 backport-7607-to-stable2407
cd .worktree/backport-7607-to-stable2407
git reset --hard HEAD^
git cherry-pick -x 3dc3a11cd68762c2e5feb0beba0b61f448c4fc92
git push --force-with-lease

[paritytech-cmd-bot-polkadot-sdk]

Created backport PR for stable2409:

• [stable2409] Backport #7607 #7716 with remaining conflicts!

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-7607-to-stable2409
git worktree add --checkout .worktree/backport-7607-to-stable2409 backport-7607-to-stable2409
cd .worktree/backport-7607-to-stable2409
git reset --hard HEAD^
git cherry-pick -x 3dc3a11cd68762c2e5feb0beba0b61f448c4fc92
git push --force-with-lease

[paritytech-cmd-bot-polkadot-sdk]

Created backport PR for stable2412:

• [stable2412] Backport #7607 #7717 with remaining conflicts!

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-7607-to-stable2412
git worktree add --checkout .worktree/backport-7607-to-stable2412 backport-7607-to-stable2412
cd .worktree/backport-7607-to-stable2412
git reset --hard HEAD^
git cherry-pick -x 3dc3a11cd68762c2e5feb0beba0b61f448c4fc92
git push --force-with-lease

[paritytech-cmd-bot-polkadot-sdk]

Created backport PR for stable2503:

• [stable2503] Backport #7607 #7718 with remaining conflicts!

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-7607-to-stable2503
git worktree add --checkout .worktree/backport-7607-to-stable2503 backport-7607-to-stable2503
cd .worktree/backport-7607-to-stable2503
git reset --hard HEAD^
git cherry-pick -x 3dc3a11cd68762c2e5feb0beba0b61f448c4fc92
git push --force-with-lease