chore: bump TypeScript target to ES2022

[Mrtenz]

The base TypeScript configuration targeted ES2020, which is older than what the browser targets and React Native version used by the clients that consume these packages actually support. Since those clients support ES2022, we can bump the shared target and lib settings to ES2022 to take advantage of newer syntax and APIs.

We stop short of ES2023, since Hermes (the React Native JS engine) doesn't fully support it yet (most notably, Array.prototype.toSorted is unsupported).

Examples

MetaMask/core#10019

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Note

Low Risk
Compiler-options-only change with no runtime logic; main effect is stricter or different typing around newer/older built-in APIs.

Overview
Updates the shared tsconfig.json so TypeScript compiles against ES2022 instead of ES2020 for target, and sets lib to ES2022 (replacing ES2023). That aligns type-checking and assumed runtime APIs with what consuming browser and React Native clients actually support, while avoiding ES2023 features that Hermes still lacks.

Because tsconfig.build.json and tsconfig.test.json extend this file, the new baseline applies across build and test as well.

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