Fix type field

[bilalebi]

This API call: https://resolver.ensembl.org/id/ENSAROG00010015245
Causes the resolver to throw:

│ pydantic_core._pydantic_core.ValidationError: 1 validation error for ResolvedPayload                                                                                                                        
│ type                                                                                                                                                                                                        
│  Input should be a valid string [type=string_type, input_value={'kind': 'strain', 'value': 'reference'}, input_type=dict]

Because it's expecting type field to be a string but it's getting a dictionary {'kind': 'strain', 'value': 'reference'}

To fix it, I changed

type: Optional[str] = None
# to
type: Optional[Dict[str, str]] = None

[azangru]

If the resolver finds multiple matches, it renders an html page where it shows a list of them, with links.

What can now be seen on this html page is that:

• The type information gets rendered as a stringified json
• It also is placed in the Resolved URL column rather than in the Type column, where it belongs

This calls for an update in this html file:

https://github.com/Ensembl/ensembl-web-resolver/blob/main/app/api/resources/templates/search_results.html#L24

[bilalebi]

Fixed now and added is_reference logic as well
Here is the example that was broken: https://resolver.ensembl.org/id/ENSAROG00010015245

Another example that was working but had None in Type: https://resolver.ensembl.org/id/ENSG00000127720