chore(misc): refine TypeScript config layout

[VGau]

This PR implements issue(s) #

Checklist

• I wrote new tests for my new core changes.
• I have successfully ran tests, style checker and build against my new changes locally.
• If this change is deployed to any environment (including Devnet), E2E test coverage exists or is included in this
  PR.
• I have informed the team of any breaking changes if there are any.

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Note

Medium Risk
Wide monorepo build and typecheck layout change (dropping composite/references) could break CI, Docker builds, or package emits if any package still relied on tsc project references.

Overview
Introduces tsconfig.base.json as the shared strict compiler defaults and makes the root tsconfig.json a thin, noEmit config for workspace-level tooling (e.g. *.config.mjs).

Across packages (SDK, integrity verifiers, postman, operations, contracts, e2e), dev tsconfig.json files now extend the base and set noEmit: true, dropping composite and TypeScript project references in favor of a simpler layout. Emit settings move into tsconfig.build.json (and tsup), with trimmed duplicate sourceMap / inlineSources on the TypeScript build configs where bundling owns maps.

tsup builds set esbuildOptions.sourcesContent = false on emitted sourcemaps. Docker build stages copy tsconfig.base.json into the image context. @consensys/linea-shared-utils adds a files: ["dist"] publish whitelist.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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