chore!: integrate launchTestNode in remaining packages

[maschad]

• Closes Integrate launchTestNode in remaining packages  #2698
• Closes Reintroduce Wallet testing documentation #2633

Release notes

In this release, we:

• Removed generateTestWallet, seedTestWallet and launchNodeAndGetWallets utilities

Summary

This PR integrates the launchTestNode utility in the remaining packages. The following packages were addressed

• @fuel-ts/account
• internal
• program
• script
• fuels
• create-fuels
• apps
• docs-snippets

Breaking Changes

Removed generateTestWallet and seedTestWallet utilities.

// before
import { bn } from "@fuel-ts/math";
import {
  seedTestWallet,
  generateTestWallet,
} from "@fuel-ts/account/test-utils";

const provider = await Provider.create("http://127.0.0.1:4000/v1/graphql");

// seeding
const walletA = Wallet.fromPrivateKey("0x...", provider);
const baseAssetId = provider.getBaseAssetId();
seedTestWallet(wallet, [{ assetId: baseAssetId, amount: bn(100_000) }]);

// generating
const walletB = await generateTestWallet(provider, [[1_000, baseAssetId]]);

// after
import { launchTestNode } from 'fuels/test-utils';

// create two wallets seeded with 100_000 units of the base asset
using launched = await launchTestNode({
  walletsConfig: {
    count: 2,
    amountPerCoin: 100_000,
  },
});

const {
  wallets: [walletA, walletB]
} = launched;

const balance = await walletA.getBalance() // 100_000

Removed launchNodeAndGetWallets utility.

// before
import { launchNodeAndGetWallets } from 'fuels/test-utils';

const { provider, wallets } = await launchNodeAndGetWallets();

// after
import { launchTestNode } from 'fuels/test-utils';

using launched = await launchTestNode();

const { provider, wallets } = launched;

Checklist

• I added — tests to prove my changes
• I updated — all the necessary docs
• I reviewed — the entire PR myself, using the GitHub UI
• I described — all breaking changes and the Migration Guide

[maschad]

Do we want to remove the following while we can?

• launchNodeAndGetWallets
• generateTestWallet
• seedTestWallet

IMO they've been superseded by launchTestNode

8939ed9

[github-actions]

Coverage Report:

Lines	Branches	Functions	Statements
79.07%(-0.17%)	71.43%(-0.14%)	77.28%(-0.13%)	79.21%(-0.17%)

Changed Files:

Ok	File (✨=New File)	Lines	Branches	Functions	Statements
🔴	packages/account/src/account.ts	84% (+0%)	67.69% (-1.54%)	85.29% (+0%)	83.66% (+0%)
🔴	packages/account/src/providers/provider.ts	68% (-0.53%)	60.54% (-1.62%)	72.28% (-1.21%)	67.96% (-0.52%)
🔴	packages/account/src/test-utils/launchNode.ts	93.13% (-5.14%)	85.96% (-0.92%)	100% (+0%)	93.45% (-4.91%)
✅	packages/account/src/test-utils/setup-test-provider-and-wallets.ts	100% (+20%)	100% (+10%)	100% (+33.34%)	100% (+20%)