[Discover] Context view doesn't work when there are encoded special chars in the id given by URL

[kertal]

Kibana version:
7.16

Describe the bug:

Given the id of a document in Elasticsearch contains an id with a special character like + "View surrounding documents" no longer works.

Steps to reproduce:

1. Create a document containing a + in its id

PUT context/_doc/1+1=2
{
  "timestamp":"2022-01-10T09:30:23",
  "name":"test"
}

2. Create a data view
3. Navigate to Discover, adapt time range so you can find the document
4. Expand the document and click on "View surrounding documents"

Expected behavior:

You should be able to see the document and its surroundings

Screenshots (if relevant):

Any additional context:
We switched Angular to react router recently (#107042), now it seems the id param of the URL is no longer decoded. That's why the document can't be found. You can test it in DevTools

PUT context/_doc/1+1=2
{
  "timestamp":"2022-01-10T09:30:23",
  "name":""
}

#this works
GET _search
{
  "query": {
    "ids": {
      "values":["1+1=2"]
    }
  }
}

#this doesn't work, and that's why it doesn't work in Discover context
GET _search
{
  "query": {
    "ids": {
      "values":["1%2B1%3D2"]
    }
  }
}

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)