[Tizen] Allow to build examples without Thread

[arkq]

Problem

Currently, all examples for Tizen platform are built with Thread enabled. Our QEMU-based CI test does not support Thread, though.

...
INFO    D/CHIP    (  875): DMG: Endpoint 1, Cluster 0x0000_0406 update version to c605d1e2
INFO    E/CHIP    (  875): DL: Thread stack not initialized
INFO    E/CHIP    (  875): DL: FAIL: get thread device type
INFO    D/CHIP    (  875): IN: SecureSession[0x1233c0]: Allocated Type:1 LSID:55725
...

Changes

• allow to disable Thread support

Testing

CI will verify.

[github-actions]

PR #26137: Size comparison from 4ccbbb7 to c84fc55

Full report (1 build for cc32xx)

platform	target	config	section	4ccbbb7b	c84fc55	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL		0	0	0	0.0
			(read only)	643249	643249	0	0.0
			(read/write)	203848	203848	0	0.0
			.ARM.attributes	44	44	0	0.0
			.ARM.exidx	8	8	0	0.0
			.bss	197248	197248	0	0.0
			.comment	194	194	0	0.0
			.data	1480	1480	0	0.0
			.debug_abbrev	933224	933224	0	0.0
			.debug_aranges	87792	87792	0	0.0
			.debug_frame	302140	302140	0	0.0
			.debug_info	20330829	20330829	0	0.0
			.debug_line	2687904	2687904	0	0.0
			.debug_loc	2838960	2838960	0	0.0
			.debug_ranges	288072	288072	0	0.0
			.debug_str	3042335	3042335	0	0.0
			.ramVecs	780	780	0	0.0
			.resetVecs	64	64	0	0.0
			.rodata	104401	104401	0	0.0
			.shstrtab	232	232	0	0.0
			.stab	204	204	0	0.0
			.stabstr	441	441	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	377963	377963	0	0.0
			.symtab	256976	256976	0	0.0
			.text	536728	536728	0	0.0