Integrate vitest matchers globally

[petertonysmith94]

Summary

With the addition of #3349, we introduced vitest matchers into fuel-gauge.

The matchers are currently not available globally for the fuel-gauge and we extend these individually within each test file:

• fuels-ts/packages/fuel-gauge/src/abi/abi-coder.test.ts

  Line 52 in 176867e

  expect.extend({ toEqualBn });

The matchers lack full type support, which has mean't that we ignore the expectations from the TS compile:

• fuels-ts/packages/fuel-gauge/src/abi/abi-coder.test.ts

  Lines 763 to 764 in 176867e

  	// @ts-expect-error: Custom matcher 'toEqualBn'
  	a: expect.toEqualBn(20),

Tasks

• Integrate matchers globally for fuel-gauge and remove expect.extends from individual test files.
• Enable full Type support for matchers and remove all @ts-expect-error from expectations.