Line breakpoints for yield

Running test: testYieldInGeneratorWithLeadingWhitespace
Setting breakpoint on `yield this.foo()` in `obj.barGenerator`
Calling `obj.barGenerator().next()`
Hit breakpoint before calling into `this.foo`

Running test: testYieldInGeneratorWithoutLeadingWhitespace
Setting breakpoint on `await this.foo()` in `obj.bazGenerator`
Calling `obj.bazGenerator().next()`
Hit breakpoint before calling into `this.foo`

Running test: testYieldInAsyncGeneratorWithLeadingWhitespace
Setting breakpoint on `yield this.foo()` in `obj.barAsyncGenerator`
Calling `obj.barAsyncGenerator().next()`
Hit breakpoint before calling into `this.foo`

Running test: testYieldInAsyncGeneratorWithoutLeadingWhitespace
Setting breakpoint on `yield this.foo()` in `obj.bazAsyncGenerator`
Calling `obj.bazAsyncGenerator().next()`
Hit breakpoint before calling into `this.foo`

Running test: testYieldInMinifiedGenerator
Setting breakpoint on `yield this.foo()` in `obj.minifiedGenerator`
Calling `obj.minifiedGenerator().next()`
Hit breakpoint before calling into `this.foo`