bug#54057: epiphany: error while loading libwebkit2gtk cannot read file data

[Jack Hill]

Hi Guix,

Epiphany (a.k.a. GNOME Web) is having trouble loading the webkit shared 
library:

```
jackhill@leyden ~$ guix describe
Generation 61Feb 18 2022 11:47:21(current)
  guix 27a91b2
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: 27a91b2f57bd0bf7efab77eaeb4b920f162bf8c8
jackhill@leyden ~$ guix shell epiphany -- epiphany
/gnu/store/ns3aks8xslgmgf98qb107gwzfxgj45k5-profile/bin/epiphany: error while 
loading shared libraries: 
/gnu/store/f965xf6iwll8cj2fb45bbqkj32n8dndb-webkitgtk-with-libsoup2-2.34.6/lib/libwebkit2gtk-4.0.so.37:
 cannot read file data
guix shell: error: epiphany: command not found
```

Best,
Jack