chore: release v4.4.4

[joepegler]

PR-Codex overview

The focus of this PR is to enhance testing capabilities, update dependencies, and add support for custom chains.

Detailed summary

• Added TESTING environment variable for testing purposes
• Updated package.json version to 4.4.4
• Implemented new functions for session storage and smart account handling
• Updated bundler and account configurations for custom chains
• Improved error messages and constants
• Enhanced testing scenarios for user operations

The following files were skipped due to too many changes: tests/account/write.test.ts, src/modules/sessions/abi.ts, src/modules/sessions/batch.ts, src/account/BiconomySmartAccountV2.ts, src/modules/session-storage/SessionFileStorage.ts, src/modules/sessions/sessionSmartAccountClient.ts, src/account/utils/getChain.ts, src/modules/utils/Helper.ts, tests/modules/write.test.ts, yarn.lock

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[github-actions[bot]]

size-limit report 📦

Path	Size
core (esm)	54.37 KB (+1.25% 🔺)
core (cjs)	59.48 KB (+1.43% 🔺)
account (tree-shaking)	52.34 KB (+0.76% 🔺)
bundler (tree-shaking)	2.63 KB (+10.15% 🔺)
paymaster (tree-shaking)	2.33 KB (0%)
modules (tree-shaking)	40.57 KB (-0.04% 🔽)