[release-1.18] wasm: add fail_open for telemetry plugins

[istio-testing]

Manual cherrypick required.

#2799 failed to apply on top of branch "release-1.18":

Applying: wasm: add fail_open for telemetry plugins
Using index info to reconstruct a base tree...
M	extensions/v1alpha1/wasm.pb.go
M	extensions/v1alpha1/wasm.pb.html
M	extensions/v1alpha1/wasm.proto
M	kubernetes/customresourcedefinitions.gen.yaml
M	proto.lock
Falling back to patching base and 3-way merge...
Auto-merging proto.lock
Auto-merging kubernetes/customresourcedefinitions.gen.yaml
Auto-merging extensions/v1alpha1/wasm.proto
Auto-merging extensions/v1alpha1/wasm.pb.html
Auto-merging extensions/v1alpha1/wasm.pb.go
CONFLICT (content): Merge conflict in extensions/v1alpha1/wasm.pb.go
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 wasm: add fail_open for telemetry plugins
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

[ericvn]

Assign to Kuat as owner of the original PR.