fix(example): Fix compilation warnings in examples

[P-R-O-C-H-Y]

Description of Change

Fix CI compilation warnings for examples. Fixing those warnings:

• array subscript 0 is outside array bounds of 'int [0]' [-Warray-bounds]
• missing initializer for member 'midiEventPacket_t::byte1' (byte2, byte3)
• ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
• missing " at the end of #error "string"

Tests scenarios

CI

Related links

[github-actions]

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[github-actions]

Memory usage test (comparing PR against master branch)

The table below shows the summary of memory usage change (decrease - increase) in bytes and percentage for each target.

Memory	FLASH [bytes]		FLASH [%]		RAM [bytes]		RAM [%]
Target	DEC	INC	DEC	INC	DEC	INC	DEC	INC
ESP32S3	💚 -4K	‼️ +38K	💚 -0.68	‼️ +14.48	💚 -248	⚠️ +416	💚 -0.85	‼️ +2.29
ESP32S2	💚 -16	0	0.00	0.00	0	0	0.00	0.00
ESP32C3	💚 -16	0	0.00	0.00	0	0	0.00	0.00
ESP32C6	0	0	0.00	0.00	0	0	0.00	0.00
ESP32H2	0	0	0.00	0.00	0	0	0.00	0.00
ESP32	💚 -24	0	0.00	0.00	0	0	0.00	0.00

Click to expand the detailed deltas report [usage change in BYTES]

Target	ESP32S3		ESP32S2		ESP32C3		ESP32C6		ESP32H2		ESP32
Example	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM
ESP32/examples/FreeRTOS/BasicMultiThreading	0	0	0	0	0	0	0	0	0	0	0	0
ESP32/examples/HWCDC_Events	‼️ +38K	⚠️ +416	-	-	0	0	0	0	0	0	-	-
ESP32/examples/RMT/Legacy_RMT_Driver_Compatible	0	0	0	0	0	0	0	0	0	0	0	0
ESP_SR/examples/Basic	💚 -4K	💚 -248	-	-	-	-	-	-	-	-	-	-
Insights/examples/DiagnosticsSmokeTest	💚 -16	0	💚 -16	0	💚 -16	0	-	-	-	-	💚 -24	0
USB/examples/MIDI/MidiInterface	0	0	0	0	-	-	-	-	-	-	-	-
USB/examples/MIDI/ReceiveMidi	0	0	0	0	-	-	-	-	-	-	-	-
Update/examples/AWS_S3_OTA_Update	0	0	0	0	0	0	0	0	-	-	0	0
WebServer/examples/HttpAuthCallbackInline	0	0	0	0	0	0	0	0	-	-	0	0

[github-actions]

Test Results

 56 files   -  83   56 suites   - 83   5m 19s ⏱️ - 1h 37m 29s
 21 tests  -   9   21 ✅  -   9  0 💤 ±0  0 ❌ ±0 
135 runs   - 168  135 ✅  - 168  0 💤 ±0  0 ❌ ±0 

Results for commit 10f999f. ± Comparison against base commit e70f4d3.

This pull request removes 9 tests.

performance.coremark.test_coremark ‑ test_coremark
performance.fibonacci.test_fibonacci ‑ test_fibonacci
performance.psramspeed.test_psramspeed ‑ test_psramspeed
performance.ramspeed.test_ramspeed ‑ test_ramspeed
performance.superpi.test_superpi ‑ test_superpi
test_touch_errors
test_touch_interrtupt
test_touch_read
validation.periman.test_periman ‑ test_periman