Some test cases incorrectly rely on the side effect of other test cases
importing `NgMatchers`. This commit fixes this by making `expect` in
`core/testing_internal` properly typed.
BREAKING CHANGES:
"{" is used a a delimiter for ICU messages then it could not be used in text nodes.
"{" should be escaped as "{{ '{' }}"
Before:
<span>some { valid } text</span>
After:
<span>some { invalid } text<span> <!-- throw parse error -->
<span>some {{ '{' }} valid } text</span>
BREAKING CHANGE:
`ComponentFixture` will be moving out of `@angular/compiler/testing` to `@angular/core/testing` in
this release. For now, it is deprecated from `@angular/compiler/testing`.
Make sure the same path is not added multiple times to the history.
It is replacing the state, instead of skipping it completely,
because the current path in the browser might not be normalized,
while the given one is normalized.
Closes#7829Closes#7897
