`x-partial` warnings with GHC 9.8

The blessings of the new `x-partial` warning will be bestowed unto you by GHC 9.8:
```
Network/URI.hs:1131:12: warning: [GHC-63394] [-Wx-partial]
In the use of ‘head’
(imported from Prelude, but defined in GHC.List):
"This is a partial function, it throws an error on empty lists. Use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
|
1131 | if head (uriPath ref) == '/' then
| ^^^^

Network/URI.hs:1437:16: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Prelude, but defined in GHC.List):
"This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
|
1437 | query = orNull tail . uriQuery
| ^^^^

Network/URI.hs:1441:19: warning: [GHC-63394] [-Wx-partial]
In the use of ‘tail’
(imported from Prelude, but defined in GHC.List):
"This is a partial function, it throws an error on empty lists. Replace it with drop 1, or use pattern matching or Data.List.uncons instead. Consider refactoring to use Data.List.NonEmpty."
|
1441 | fragment = orNull tail . uriFragment
| ^^^^
```
These are all false alarms:
https://github.com/haskell/network-uri/blob/4012e57276a6c121c4c6682103a711591cdadfb8/Network/URI.hs#L1148-L1149
https://github.com/haskell/network-uri/blob/4012e57276a6c121c4c6682103a711591cdadfb8/Network/URI.hs#L1453-L1463