feat: improved assertion options for agent errors

[krpeacock]

Description

Raised in #907, we can offer better assertion strategies for identifying different types of errors during runtime.

ActorCallError, QueryCallRejectedError, and UpdateCallRejectedError now

• use setPrototypeOf during construction
• expose and customize name
• expose __proto__

Fixes #907

How Has This Been Tested?

New unit tests

Checklist:

• [X] My changes follow the guidelines in CONTRIBUTING.md.
• [X] The title of this PR complies with Conventional Commits.
• [X] I have edited the CHANGELOG accordingly.
• [X] I have made corresponding changes to the documentation.

[github-actions[bot]]

size-limit report 📦

Path	Size
@dfinity/agent	86.14 KB (+0.17% 🔺)
@dfinity/candid	13.58 KB (0%)
@dfinity/principal	4.97 KB (0%)
@dfinity/auth-client	60.83 KB (-0.01% 🔽)
@dfinity/assets	80.85 KB (+0.25% 🔺)
@dfinity/identity	58.03 KB (+0.01% 🔺)
@dfinity/identity-secp256k1	266.8 KB (+0.09% 🔺)