Fix error when importing template to Marina

[bordalix]

App is calling marina importTemplate like this:

await marina.importTemplate({
  type: 'ionio-artifact',
  template: JSON.stringify(synthAssetArtifact),
})

On marina is received by provider, which adds an undefined field to array (changeTemplate)

https://github.com/vulpemventures/marina/blob/e91d805c50bc14a8f9ba70511d85f1d7221a5cc8/src/inject/marina/provider.ts#L45-L47

So, params has a length of 2 when the function importTemplate is called. A wrong validation of params[1] on line 493 called validateContract with an undefined contract, which generated a throw.

https://github.com/vulpemventures/marina/blob/e08df1c73c53461d94b6434f286766c00c9e6636/src/content/marina/marinaBroker.ts#L485-L499

Changing line 493 to if (params[1]) fixed it.

The big question is: how did this ever worked? @tiero @louisinger

[tiero]

I think bug was introduced here https://github.com/vulpemventures/marina/pull/417

We never release to the stores tho. You were using marina from master or latest in store?

[bordalix]

I think bug was introduced here #417

We never release to the stores tho. You were using marina from master or latest in store?

From master. Yeah, confirm #417

[louisinger]

uACK, indeed was introduced with PR 417