fix: type upgrade for the assign stmt type annotation for the call expression

[Peefy]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

fix #1674

fix: type upgrade for the assign stmt type annotation for the call expression

[zong-zhe]

LGTM

[coveralls]

Pull Request Test Coverage Report for Build 11269298183

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 4 of 4 (100.0%) changed or added relevant lines in 1 file are covered.
• 9 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.006%) to 70.651%

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Files with Coverage Reduction	New Missed Lines	%
kclvm/sema/src/resolver/mod.rs	1	99.06%
kclvm/tools/src/LSP/src/compile.rs	1	83.5%
kclvm/sema/src/core/symbol.rs	3	53.63%
kclvm/driver/src/toolchain.rs	4	88.89%

Totals
Change from base Build 11247800898:	-0.006%
Covered Lines:	51444
Relevant Lines:	72814

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💛 - Coveralls