fix: nested if chains

[LuLaValva]

Scope

If chains caused TS errors

if
else-if
  if
  else-if
//^^^^^^^ isn't detected properly
else

Description

Fixes the above

Checklist:

• I have updated/added documentation affected by my changes.
• I have added tests to cover my changes.

[changeset-bot]

🦋 Changeset detected

Latest commit: f2f3c2c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@marko/language-server	Patch
@marko/language-tools	Patch
@marko/type-check	Patch
marko-vscode	Patch

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