support doc blocks on versioned models

[emmyoop]

resolves #8540

Problem

Column descriptions on versioned models error out when using doc blocks

Solution

Support doc blocks for versioned columns

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX
• This PR includes type annotations for new and modified functions

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (eac13e3) 86.50% compared to head (bd7a7da) 86.55%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8771      +/-   ##
==========================================
+ Coverage   86.50%   86.55%   +0.04%     
==========================================
  Files         176      176              
  Lines       25825    25823       -2     
==========================================
+ Hits        22341    22351      +10     
+ Misses       3484     3472      -12     

Flag	Coverage Δ
integration	83.39% <100.00%> (+0.11%)	⬆️
unit	65.12% <50.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
core/dbt/parser/manifest.py	92.24% <ø> (ø)
core/dbt/parser/schema_renderer.py	95.23% <100.00%> (+0.23%)	⬆️

... and 5 files with indirect coverage changes

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[aranke]

LGTM!

[github-actions]

The backport to 1.5.latest failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-1.5.latest 1.5.latest
# Navigate to the new working tree
cd .worktrees/backport-1.5.latest
# Create a new branch
git switch --create backport-8771-to-1.5.latest
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 df791f729cf3ba9d882ea168894cc4318b7193b6
# Push it to GitHub
git push --set-upstream origin backport-8771-to-1.5.latest
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-1.5.latest

Then, create a pull request where the base branch is 1.5.latest and the compare/head branch is backport-8771-to-1.5.latest.