wgpu-hal: Fix Mesa version check for version with suffix containing `…

….` (gfx-rs#4959)

On Pop!_OS we have versions like
`Mesa 23.3.0-1pop0~1702935939~22.04~67e417a`. This failed to parse here
since it tried to split at the `.` in the suffix.

Not sure if other distros use a suffix with a `.`, but splitting from
the left and comparing as a tuple instead of a float seems cleaner
overall.

Co-authored-by: Connor Fitzgerald <connorwadefitzgerald@gmail.com>

wgpu-hal/src/vulkan/instance.rs

@@ -1,6 +1,7 @@
 use std::{
     ffi::{c_void, CStr, CString},
     slice,
+    str::FromStr,
     sync::Arc,
     thread,
 };
@@ -806,11 +807,16 @@ impl crate::Instance<super::Api> for super::Instance {
                 {
                     // Check if mesa driver and version less than 21.2
                     if let Some(version) = exposed.info.driver_info.split_once("Mesa ").map(|s| {
-                        s.1.rsplit_once('.')
-                            .map(|v| v.0.parse::<f32>().unwrap_or_default())
-                            .unwrap_or_default()
+                        let mut components = s.1.split('.');
+                        let major = components.next().and_then(|s| u8::from_str(s).ok());
+                        let minor = components.next().and_then(|s| u8::from_str(s).ok());
+                        if let (Some(major), Some(minor)) = (major, minor) {
+                            (major, minor)
+                        } else {
+                            (0, 0)
+                        }
                     }) {
-                        if version < 21.2 {
+                        if version < (21, 2) {
                             // See https://gitlab.freedesktop.org/mesa/mesa/-/issues/4688
                             log::warn!(
                                 "Disabling presentation on '{}' (id {:?}) due to NV Optimus and Intel Mesa < v21.2",