fix: proper number parsing for chunking

[bangjelkoski]

Summary

We had to fix the arguments passing to the splitArrayToChunks to be a Number.

Rationale

How has this been tested?

• [] Current tests cover my changes
• Added new tests
• Manually tested the code

[vercel]

@bangjelkoski is attempting to deploy a commit to the Pyth Network Team on Vercel.

A member of the Team first needs to authorize it.

[bangjelkoski]

Tested locally against mainnet

{"hash":"95527DF7FA6A3B38BCA63E134ED748C857DE3E84D81D1E2EE497C7F84E3E76B0","msg":"Successfully broadcasted txHash for chunk 2"}
{"hash":"CFCD1A2FB8F141A35C1739D737EB66F0B3CA5ABD3DD67D602C8DBEA90AF01546","msg":"Successfully broadcasted txHash for chunk 3"}
{"hash":"EA901953FC16D7831D1BE29EF7E5E1C2C67A6D6D5855AA00D9DAF90346BC972D","msg":"Successfully broadcasted txHash for chunk 1"}
{"hash":"94FC58E91ECEA2D31608026FEE289A7BD74A294D00C23EBA9D650C1BF877CC7C","msg":"Successfully broadcasted txHash for chunk 0"}

[ali-bahjati]

Great changes here. My only concern here is the bookkeeping of accounts and their balances especially because you'll have more accounts as you add more feeds.

[bangjelkoski]

We could add some logging so it's easier for tracking, what do you think? @ali-bahjati