fix(parser): handle empty type parameters and conditional union/intersection bugfix

[dylan-conway]

What does this PR do?

Fixes a bug when parsing unions or intersections with infer extends ternary.

var bar: Bar extends string | infer Bar extends string ? Bar : never;
var bar: Bar extends string & infer Bar extends string ? Bar : never;

fixes #9959

Allows parsing empty type parameters for interfaces and types. Inspired by this pr in esbuild evanw/esbuild#3513

interface Foo<> {};
type Bar<> = {};

How did you verify your code works?

added some tests

[github-actions]

❌ @dylan-conway 3 files with test failures on linux-x64:

• test/integration/next-pages/test/dev-server.test.ts 1 failing
• test/integration/next-pages/test/next-build.test.ts 1 failing
• test/js/node/watch/fs.watchFile.test.ts 2 failing

View test output

^{#6878663ea64783647b7c83d86cd6b105fedfe7a4}

[github-actions]

❌ @dylan-conway 2 files with test failures on linux-x64-baseline:

• test/integration/next-pages/test/dev-server.test.ts 1 failing
• test/integration/next-pages/test/next-build.test.ts 1 failing

View test output

^{#6878663ea64783647b7c83d86cd6b105fedfe7a4}

[github-actions]

❌ @dylan-conway 2 files with test failures on bun-darwin-aarch64:

• test/js/bun/http/serve.test.ts 2 failing
• test/js/bun/spawn/spawn.test.ts 1 failing

View test output

^{#6878663ea64783647b7c83d86cd6b105fedfe7a4}

[github-actions]

❌ @dylan-conway 2 files with test failures on bun-darwin-x64:

• test/js/bun/spawn/spawn.test.ts 1 failing
• test/js/node/http/node-http.test.ts 1 failing

View test output

^{#6878663ea64783647b7c83d86cd6b105fedfe7a4}