Fix inconsistencies discovered in #261

[Gozala]

1. Should be timeout instead (as per comment here https://github.com/ipfs/js-ipfs-bitswap/pull/261/files#r589357353)

   js-ipfs-bitswap/src/network.js

   Lines 165 to 167 in f546e4b

   	// TODO: Should this be a timeout options insetad ?
   	// @ts-expect-error - 'maxTimeout' does not exist in type
   	maxTimeout: CONSTANTS.providerRequestTimeout,

2. equality check on messages seems to have a bug (for more context see https://github.com/ipfs/js-ipfs-bitswap/pull/261/files#r587863878)
   

   js-ipfs-bitswap/src/types/message/index.js

   Lines 207 to 209 in f546e4b

   	// @TODO - Is this a bug ?
   	// @ts-expect-error - isMap equals map values to be objects not numbers
   	!isMapEqual(this.blockPresences, other.blockPresences)

3. Want list entries sorting has a bug (See https://github.com/ipfs/js-ipfs-bitswap/pull/261/files#r587867673)

4. Need to specify want type when adding it to wantlist (see https://github.com/ipfs/js-ipfs-bitswap/pull/261/files#r587865473)