[WebProfilerBundle] Added test case for #10806
[WebProfilerBundle] fixed profiler homepage, fixed #10806
[WebProfilerBundle] added test case for #10773
bug #10820 [WebProfilerBundle] Fixed profiler seach/homepage with empty token (tucksaun)

This PR was merged into the 2.3 branch.

Discussion
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[WebProfilerBundle] Fixed profiler seach/homepage with empty token

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #10806
| License       | MIT
| Doc PR        | none

Commits
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16dd0e5 [WebProfilerBundle] added test case for #10773
5b91e70 [WebProfilerBundle] fixed profiler homepage, fixed #10806
7b425d2 [WebProfilerBundle] Added test case for #10806