Inherited methods not merging JSDoc comments

Steps to reproduce

class Foo {
   /** foo bar */
   method(): void {}
}

class Bar extends Foo {
   /** @remarks lorem ipsum */
   method(): void {}
}

Behavior with typescript@5.9

Hovering over Bar#method gives:

(method) Bar.method(): void
foo bar
@remarks — lorem ipsum

Behavior with tsgo

Hovering over Bar#method gives:

(method) Bar.method(): void
@remarks — lorem ipsum

Note that the foo bar is gone. I believe that blocks like @remarks being merged is a case not handled by microsoft/typescript-go#2111

先从 issue 中的 TypeScript 5.9 和 tsgo 复现开始，然后阅读 microsoft/typescript-go#2111，了解相关的 JSDoc 合并行为。比较继承方法文档的处理方式，并确保补全会一致地合并 foo bar 文本和 @remarks 块。