Not completing multiple fields

[EpicEricEE]

Describe the bug
When typing #sym., the completion panel opens with all symbols (e.g. arrow), but when then further typing #sym.arrow., no completions are shown. Only when then typing a single letter (e.g. r), the completion panel opens again. The same is true in math mode, where arrow. opens the completion panel showing all modifiers, but arrow.long. doesn't. Similary, when defining a dictionary as

#let dict = (first: (second: "value"))

only #dict.first is completed, but #dict.first. doesn't show any completions (until I append the s for second)

Package/Software version:

tinymist extension version: v0.12.19. Get it by tinymist --version in terminal.

tinymist 
Build Timestamp:     2025-02-03T08:31:31.959154300Z
Build Git Describe:  v0.12.19-dirty
Commit SHA:          1f32f6ecccc31de279cfced14a6b5493ced9769f
Commit Date:         None
Commit Branch:       None
Cargo Target Triple: x86_64-pc-windows-msvc
Typst Version:       0.13.0

[Myriad-Dreamin]

Sounds like a mismatch on AST (some problem in matcher.rs), where we reparse an expression having a intermediate dot as a variant of field access.

tinymist/crates/tinymist-analysis/src/syntax/matcher.rs

Lines 532 to 538 in a778c8c

	/// A field access expression.
	FieldAccess(LinkedNode<'a>),
	/// A dot access expression, for example, `#a.|`, `$a.|$`, or `x.|.y`.
	/// Note the cursor of the last example is on the middle of the spread
	/// operator.
	DotAccess(LinkedNode<'a>),
	}