fix loading from url, was still assuming pure json format

[toloudis]

Problem

load from url had not been properly updated to match viewer interfaces.
resolves #344

Solution

I just didn't find this code path when making a similar update for drag and drop. Once identified, the fix was to just ensure that the object passed around is an ISimulariumFile instead of a json object.

Type of change

• Bug fix (non-breaking change which fixes an issue)

[github-actions]

jest coverage report 🧪

Total coverage

Status	Category	Percentage	Covered / Total
🟡	Statements	73.85%	517/700
🟡	Branches	68.18%	105/154
🔴	Functions	42.61%	75/176
🟡	Lines	73.77%	498/675

Status of coverage: 🟢 - ok, 🟡 - slightly more than threshold, 🔴 - under the threshold

Show files with reduced coverage 🔻

Reduced coverage

Status	Filename	Statements	Branches	Functions	Lines
🔴	src/state/trajectory	36.46%	0%	4.34%	36.46%

Status of coverage: 🟢 - ok, 🟡 - slightly more than threshold, 🔴 - under the threshold