perf: coerce blockSelector and blockClass to a single concept and reduce branching

[JonasBa]

this builds on top of #1536, the idea is to create a single blocking selector and remove some runtime checking and branching inside isBlocked

This is a stacked PR btw, once upstream is merged I will rebase so it'll only contain the related changes

[changeset-bot]

🦋 Changeset detected

Latest commit: 7d67644

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 18 packages

Name	Type
rrweb	Patch
rrweb-snapshot	Patch
rrdom	Patch
rrdom-nodejs	Patch
rrweb-player	Patch
@rrweb/all	Patch
@rrweb/replay	Patch
@rrweb/record	Patch
@rrweb/types	Patch
@rrweb/packer	Patch
@rrweb/web-extension	Patch
rrvideo	Patch
@rrweb/rrweb-plugin-console-record	Patch
@rrweb/rrweb-plugin-console-replay	Patch
@rrweb/rrweb-plugin-sequential-id-record	Patch
@rrweb/rrweb-plugin-sequential-id-replay	Patch
@rrweb/rrweb-plugin-canvas-webrtc-record	Patch
@rrweb/rrweb-plugin-canvas-webrtc-replay	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[JonasBa]

Discussed with maintainers: we can make this more efficient by constructing a validation function that is then passed down to the serializers

[JonasBa]

Closing this in favor of a better alternative

[eoghanmurray]

Do you have the other alternative as a PR @JonasBa ?