v3: new build system fixes round 2

[ericallam]

• Fixed empty env vars overriding in dev runs
• Fixed stuck runs when a child run fails with a process exit
• Better support for pushing to a custom docker registries for self-hosters
• Fix --project-ref when running deploy
• Fix --config when running deploy
• The emitDecoratorMetadata build extension now works when using a tsconfig.json file that extends another tsconfigfile

[changeset-bot]

🦋 Changeset detected

Latest commit: e09767f

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

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[pkg-pr-new]

pnpm add https://pkg.pr.new/triggerdotdev/trigger.dev@1283

pnpm add https://pkg.pr.new/triggerdotdev/trigger.dev/@trigger.dev/build@1283

pnpm add https://pkg.pr.new/triggerdotdev/trigger.dev/@trigger.dev/core@1283

pnpm add https://pkg.pr.new/triggerdotdev/trigger.dev/@trigger.dev/sdk@1283

commit: e5420fc