Manufacturername matching is still case sensitive, still requiring individual spelling in DDF

[SwoopX]

Does the issue really belong here?

• I definitively want to report a bug within deCONZ or its REST-API

Is there already an existing issue for this?

• I have searched the existing issues and there is none for the bug at hand

Describe the bug

With f9bd82f, DDF manufacturername matching becamse case insensitive to ease up the situation with differenct spellings of manufacturernames (see also #5903 (comment)). However, due to some internal deconz changes, his functionality got lost again. The anticipated fix (#7864) does apparently not restore an insensitive check.

Similar behavior discussed in #7949.

Steps to reproduce the behavior

1. Take a device you know the manufacturername of (exact spelling), which is NOT paired to deconz. Must have a valid DDF available
2. Modify the DDFs manufacturername and change capitalization of an arbitrary letter. Ensure the DDF does not contain a fitting manufacturername, spelling-wise.
3. Try to pair the device and watch it fail

Expected behavior

Manufacturername should be matched case-insensitive.

Screenshots

Environment

• Host system: (Raspberry Pi / PC / NAS / MAC)
• Running method: (Raspbian / Ubuntu / Home Assistent deCONZ Add-on / deconz-docker container / Windows / Virtual Machine)
• Firmware version: (26xxyy00)
• deCONZ version (not Home assistant Addon version!): (2.xx.yy)
• Device: (ConBee I / ConBee II / ConBee III / RaspBee I / RaspBee II)
• Do you use an USB extension cable: (yes / no) -- only relevant for ConBee I/II/III
• Is there any other USB or serial devices connected to the host system? If so: Which?

deCONZ Logs

13:08:16:891 DEV no DDF for 0xCCCCCCFFFE393896, modelId: eTRV0100

Additional context

No response