Corrected JPEG XL file type

[1div0]

Before:

€ exiv2 pr IMG_20210618_081111.jxl
File name       : IMG_20210618_081111.jxl
File size       : 1638062 Bytes
MIME type       : image/generic
Image size      : 3264 x 2448
Thumbnail       : image/jpeg, 15556 Bytes
Camera make     : LENOVO
Camera model    : Lenovo TAB3 10 Business
Image timestamp : 2021:06:18 08:11:11
File number     : 
Exposure time   : 0.000818 s
Aperture        : F2.2
Exposure bias   : 0 EV
Flash           : No flash
Flash bias      : 
Focal length    : 3.5 mm
Subject distance: 
ISO speed       : 94
Exposure mode   : Not defined
Metering mode   : Center weighted average
Macro mode      : 
Image quality   : 
White balance   : Auto
Copyright       : 
Exif comment    : 

After:

€ exiv2 pr IMG_20210618_081111.jxl
File name       : IMG_20210618_081111.jxl
File size       : 1638062 Bytes
MIME type       : image/jxl
Image size      : 3264 x 2448
Thumbnail       : image/jpeg, 15556 Bytes
Camera make     : LENOVO
Camera model    : Lenovo TAB3 10 Business
Image timestamp : 2021:06:18 08:11:11
File number     : 
Exposure time   : 0.000818 s
Aperture        : F2.2
Exposure bias   : 0 EV
Flash           : No flash
Flash bias      : 
Focal length    : 3.5 mm
Subject distance: 
ISO speed       : 94
Exposure mode   : Not defined
Metering mode   : Center weighted average
Macro mode      : 
Image quality   : 
White balance   : Auto
Copyright       : 
Exif comment    : 

In other words, MIME type was not correctly reported.

[hassec]

Could you have a look at the failing tests please?

[1div0]

Sure, but not today.

Tests are passing now

[antermin]

0.27's code has the wrong tag, so I think we should also apply this to the 0.27 branch?

[kmilos]

@mergify backport 0.27-maintenance

[mergify]

backport 0.27-maintenance

✅ Backports have been created

• #2578 Corrected JPEG XL file type (backport #1824) has been created for branch 0.27-maintenance