feature: do not query whether there are documents under the branch

[dspo]

What type of this PR

Add one of the following kinds:
/kind feature

What this PR does / why we need it:

• do not query whether there are documents under the branch

Which issue(s) this PR fixes:

• Fixes #your-issue_number
• [Erda Cloud Issue Link](paste your link here)

Specified Reviewers:

/assign @your-reviewer

ChangeLog

Language	Changelog
🇺🇸 English
🇨🇳 中文

Need cherry-pick to release versions?

Add comment like /cherry-pick release/1.0 when this PR is merged.

For details on the cherry pick process, see the cherry pick requests section under CONTRIBUTING.md.

[codecov]

Codecov Report

Merging #1575 (cfdc69a) into master (3e6789d) will increase coverage by 0.09%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1575      +/-   ##
==========================================
+ Coverage   12.43%   12.52%   +0.09%     
==========================================
  Files        1028     1028              
  Lines      107851   107874      +23     
==========================================
+ Hits        13406    13510     +104     
+ Misses      92969    92838     -131     
- Partials     1476     1526      +50     

Impacted Files	Coverage Δ
modules/dop/endpoints/apidoc.go	0.00% <ø> (ø)
...arios/action/components/actionForm/testplan-run.go	52.50% <0.00%> (ø)
pkg/expression/expression_reconcile.go	19.80% <0.00%> (+1.62%)	⬆️
pkg/parser/pipelineyml/pipelineyml.go	47.25% <0.00%> (+8.79%)	⬆️
...narios/issue-manage/components/issueGantt/model.go	15.85% <0.00%> (+15.85%)	⬆️
pkg/parser/pipelineyml/visitor_ref_op.go	30.20% <0.00%> (+30.20%)	⬆️

[johnlanni]

/approve