Fixes WiFiProv.ino

[SuGlider]

Description of Change

Fixes WiFi Provisioning example to work with the new Network layer.
Adds a WiFi.begin() for automatic connection after provisioning or after reading NVS.
Changed the Provisioning mode to BLE in order to avoid a memory releasing problem with ESP32 after provisioning.

Tests scenarios

Tested with S3 and ESP32 using the example from
https://github.com/espressif/arduino-esp32/blob/master/libraries/WiFiProv/examples/WiFiProv/WiFiProv.ino

Related links

Fix #9943

[github-actions]

	Warnings
⚠️	Some issues found for the commit messages in this PR: the commit message "Update WiFiProv.ino": summary looks empty type/action looks empty Please fix these commit messages - here are some basic tips: follow Conventional Commits style correct format of commit message should be: <type/action>(<scope/component>): <summary>, for example fix(esp32): Fixed startup timeout issue allowed types are: change,ci,docs,feat,fix,refactor,remove,revert,test sufficiently descriptive message summary should be between 20 to 72 characters and start with upper case letter avoid Jira references in commit messages (unavailable/irrelevant for our customers) TIP: Install pre-commit hooks and run this check when committing (uses the Conventional Precommit Linter).
⚠️	The source branch "SuGlider_WiFi_Prov_example" incorrect format: contains uppercase letters. This can cause troubles on case-insensitive file systems (macOS). Please rename your branch.

	Messages
📖	You might consider squashing your 3 commits (simplifying branch history).

👋 Hello SuGlider, we appreciate your contribution to this project!

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Generated by 🚫 dangerJS against 9334014

[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	0	0	0.00	0.00	0	0	0.00	0.00
ESP32S2	0	0	0.00	0.00	0	0	0.00	0.00
ESP32C3	0	⚠️ +10	0.00	0.00	0	0	0.00	0.00
ESP32C6	0	0	0.00	0.00	0	0	0.00	0.00
ESP32	0	⚠️ +4	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		ESP32
Example	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM	FLASH	RAM
WiFiProv/examples/WiFiProv	0	0	0	0	⚠️ +10	0	0	0	⚠️ +4	0

[github-actions]

Test Results

 56 files  ±0   56 suites  ±0   5m 19s ⏱️ +2s
 21 tests ±0   21 ✅ ±0  0 💤 ±0  0 ❌ ±0 
135 runs  ±0  135 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 9334014. ± Comparison against base commit 4a6437d.

♻️ This comment has been updated with latest results.