Support syntax highlight of typescript expressions in multiline jsdoc comments

[Raynos]

Currently jsdoc annotations that include typescript expressions for javascript with // @ts-check do not support the right colors when spread out over multiple lines.

The second parameter buckets is spread out over multiple lines and has the comment color instead of the type expression color.

[Raynos]

The same holds true for multi line type definitions

[mjbvz]

This should be fixed now:

Notice how the block is now the same mint green color and there is no longer any red {{

Note that we don't currently highlight the type components. I looked into this but none of the solutions I came up with worked well for how existing themes are written