Enable `@typescript-eslint/strict-boolean-expressions` rule

[faustbrian]

Opening a separate issue from https://github.com/ethereumjs/ethereumjs-monorepo/issues/1935 for enabling the rule mentioned in the title. Keeping a checklist here to track what was done:

• [x] block
• [x] blockchain
• [x] client
• [x] common
• [x] devp2p
• [x] ethash
• [x] evm
• [x] rlp
• [x] statemanager
• [x] trie
• [x] tx
• [x] util
• [x] vm

[faustbrian]

Opened PRs for all packages that should be carefully reviewed and manually tested for critical functionality. After all of these are merged I'll address https://github.com/ethereumjs/ethereumjs-monorepo/issues/1935#issuecomment-1215036381 in separate PRs.