Typegen adding invalid import

[TarikGul]

rel: #5972

Currently the typegen for 1.3.0 for Kusama is adding StagingXcmV4Xcm to the imports of query.ts when there is no use of the Import. This is causing typescript build issues. I am not able to find the source of the issue as the code is quite complicated. Due to this being a relatively harmless issue, I am adding a build rule to ignore it!

That being said this issue should be fixed, and the bug can be replicated by removing the "noUnusedLocals": false rules in the tsconfig compiler options for the builds.

[TarikGul]

We found that the type assignment in the typegen has different lookupName vs type:

ex

 {
  info: 19,
  lookupIndex: 400,
  lookupName: 'StagingXcmV4Xcm',
  type: 'Vec<StagingXcmV4Instruction>',
  docs: [],
  namespace: '',
  sub: {
    docs: [],
    info: 15,
    lookupIndex: 402,
    lookupName: 'StagingXcmV4Instruction',
    type: 'Lookup402'
  },
  lookupNameRoot: undefined,
  typeName: 'Vec<Instruction>'
}

Which is causing different import vs assignment for RecordXcm

[TarikGul]

You can replicate the above output by inserting:

      if (typeDef.lookupName === 'StagingXcmV4Xcm' || typeDef.type === 'StagingXcmV4Xcm') {
        console.log('TYPEDEF: ', lookup.getTypeDef(storageEntry.type.asPlain))
      }

in https://github.com/polkadot-js/api/blob/master/packages/typegen/src/generate/query.ts#L31