Update participant address when it reaches the Present state as its contact address is now known

assigned to @AndreaGianarda

mentioned in merge request linphone-sdk!3848 (merged)

added 6 commits

• 8e4cdff8...5fcd7467 - 5 commits from branch master
• 2dce4443 - Update participant address when it reaches the Present state as its contact address is now known

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merged