The `web_workers/images` example is not being tested by any e2e
spec and therefore it's technically not necessary to fix that it uses
external resources, though in order to ensure that the Bazel builds
are hermetic and that we can eventually add e2e specs for the
web_worker/image example, we should avoid any use of external
resources.
We remove the `web-animations` polyfill in the `web_workers/animations`
example because we should try to vendor as few as possible deps. Also
the animations API is already supported by browsers we run the e2e tests
against (note here: `web_workers/animations` is currently also disabled)
PR Close#28562
Currently the "routing" playground example fails the e2e tests
because it tries to load the OpenSans font using an external
HTTP request. External http requests are not allowed (unless
explicitly enabled) within Bazel in order to ensure that
all targets are built and tested in a hermetic way.
In order to work around this issue in a Bazel idiomatic way,
we just vendor the fonts in the "third_party" folder. Note
that we can technically also enable internet for the RBE
host platform, but it's not a best practice for hermeticity.
The following syntax would allow us to enable internet for
RBE (stated here for tracking)
```
properties: {
name: "dockerNetwork"
value: "standard"
}
```
PR Close#28490
Alex Eagle
Alex Eagle
Paul Gschwendtner
Greg Magolan