Typedef declaration is not highlighting

[FMorschel]

Repro:

class MyClass {}

MyClass? a;

typedef MyTypedef = MyClass;

MyTypedef? b;

If you place the cursor over any MyClass they all light up but the declaration for MyTypedef (line 5) is not highligthing, only at the variable (line 7).

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CC: @DanTup

[dart-github-bot]

Summary: The issue reports that the MyTypedef declaration on line 5 is not highlighted when the cursor is placed over any MyClass in the code, even though the variable declaration on line 7 is highlighted.