Fix loading issue after upgrade from older version

[maskaravivek]

Description

Fixes #1393

After the changes in how the authCookie is stored and used after the 2FA changes, we are forced to log out the user if he is coming from an older version. This PR checks for the cached values and if those values are not present, the user is asked to login again.

[codecov-io]

Codecov Report

Merging #1454 into 2.7.x-release will increase coverage by 0.01%.
The diff coverage is 0%.

@@               Coverage Diff                @@
##           2.7.x-release   #1454      +/-   ##
================================================
+ Coverage           3.28%    3.3%   +0.01%     
================================================
  Files                128     128              
  Lines               6870    6848      -22     
  Branches             673     671       -2     
================================================
  Hits                 226     226              
+ Misses              6629    6607      -22     
  Partials              15      15

Impacted Files	Coverage Δ
.../java/fr/free/nrw/commons/auth/SessionManager.java	16.66% <0%> (-0.48%)	⬇️
...n/java/fr/free/nrw/commons/auth/LoginActivity.java	0% <0%> (ø)	⬆️
.../fr/free/nrw/commons/nearby/NearbyMapFragment.java	0% <0%> (ø)	⬆️
.../free/nrw/commons/upload/SingleUploadFragment.java	0% <0%> (ø)	⬆️
...ava/fr/free/nrw/commons/nearby/NearbyActivity.java	0% <0%> (ø)	⬆️
...java/fr/free/nrw/commons/category/CategoryDao.java	0% <0%> (ø)	⬆️
...e/nrw/commons/location/LocationServiceManager.java	0% <0%> (ø)	⬆️
...fr/free/nrw/commons/nearby/NearbyListFragment.java	0% <0%> (ø)	⬆️

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[neslihanturan]

Works like a charm @maskaravivek !