fix: improve MFA QR Code resilience so as to support providers like 1…

…Password (#1455)

## What kind of change does this PR introduce?

Reduced version of #1438. This increases the [error correction
level](https://pkg.go.dev/github.com/boombuler/barcode@v1.0.1/qr#ErrorCorrectionLevel)
which should make the QR Code easier to scan

Other aspects such as visibility of QR code and potentially size
adjustments will be handled for later. Want to get the minimal possible
change out that might fix the issue

Works with 1Password locally, will test against Supabase setup once
merged

internal/api/mfa.go

@@ -124,7 +124,7 @@ func (a *API) EnrollFactor(w http.ResponseWriter, r *http.Request) error {
 	}
 	var buf bytes.Buffer
 	svgData := svg.New(&buf)
-	qrCode, _ := qr.Encode(key.String(), qr.M, qr.Auto)
+	qrCode, _ := qr.Encode(key.String(), qr.H, qr.Auto)
 	qs := goqrsvg.NewQrSVG(qrCode, DefaultQRSize)
 	qs.StartQrSVG(svgData)
 	if err = qs.WriteQrSVG(svgData); err != nil {