remove unwraps in registry_query command (#10936)

# Description

After talking to @CAD97, I decided to change these unwraps to expects.
See the comments. The bigger question is, how did unwrap pass the CI?

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crates/nu-command/src/system/registry_query.rs

@@ -308,16 +308,21 @@ fn reg_value_to_nu_list_string(reg_value: winreg::RegValue, call_span: Span) ->
 }
 
 fn reg_value_to_nu_int(reg_value: winreg::RegValue, call_span: Span) -> nu_protocol::Value {
-    let value = match reg_value.vtype {
-        REG_DWORD => u32::from_reg_value(&reg_value).unwrap() as i64,
-        REG_DWORD_BIG_ENDIAN => {
-            // winreg (v0.51.0) doesn't natively decode REG_DWORD_BIG_ENDIAN
-            u32::from_be_bytes(unsafe { *reg_value.bytes.as_ptr().cast() }) as i64
-        }
-        REG_QWORD => u64::from_reg_value(&reg_value).unwrap() as i64,
-        _ => unreachable!(
-            "registry value type should be REG_DWORD, REG_DWORD_BIG_ENDIAN, or REG_QWORD"
-        ),
-    };
+    let value =
+        match reg_value.vtype {
+            // See discussion here https://github.com/nushell/nushell/pull/10806#issuecomment-1791832088
+            // "The unwraps here are effectively infallible...", so I changed them to expects.
+            REG_DWORD => u32::from_reg_value(&reg_value)
+                .expect("registry value type should be REG_DWORD") as i64,
+            REG_DWORD_BIG_ENDIAN => {
+                // winreg (v0.51.0) doesn't natively decode REG_DWORD_BIG_ENDIAN
+                u32::from_be_bytes(unsafe { *reg_value.bytes.as_ptr().cast() }) as i64
+            }
+            REG_QWORD => u64::from_reg_value(&reg_value)
+                .expect("registry value type should be REG_QWORD") as i64,
+            _ => unreachable!(
+                "registry value type should be REG_DWORD, REG_DWORD_BIG_ENDIAN, or REG_QWORD"
+            ),
+        };
     Value::int(value, call_span)
 }