[isolatedDecalaration] Quick fix for isolatedDeclarations drops trailing unknown in generics instantiation

[blickly]

🔎 Search Terms

isolatedDeclaerations autofix, drop, missing, unknown, type parameter, type argument, generics, template type

🕗 Version & Regression Information

• This changed between versions 5.6 and 5.7

⏯ Playground Link

https://www.typescriptlang.org/dev/bug-workbench/?isolatedDeclarations=true&ts=5.7.3#code/PTAEAEEsGcHsBsCGAXApgEwCKoMZIE4qSwB20AXKMvgK6oBQIEi88sA7gFIWgBmL0Bk3DpcBIqUrU69RmHC9I8VCUQBbVFNTRkAOmTR6y5KAAeoSjRIBrEhxIBuWalMAHWPhM5SO0NFAAvKAkqOygAMqoyAAUANqmALoAlA5AA

💻 Code

let x : unknown;
export const s = new Set([x]);

🙁 Actual behavior

Applying the quick fix gives incorrect code with unknown missing:

let x : unknown;
export const s: Set = new Set([x]);

🙂 Expected behavior

let x : unknown;
export const s: Set<unknown> = new Set([x]);

Additional information about the issue

I haven't checked yet, but I'd guess this to be related to #59665