Fix all violations of JavadocParagrath check in checkstyle code base

[romani]

copy of checkstyle/checkstyle#15763

Suppression introduced at https://github.com/checkstyle/checkstyle/pull/15686/files#r1785246044

We need to resolve all cases in our code and remove suppression. There are about 250 violations.

[INFO] --- antrun:3.1.0:run (ant-phase-verify) @ sevntu-checks ---00:54
[INFO] Executing tasks00:54
[INFO]      [echo] Checkstyle started (../../../config/checkstyle-checks.xml): 15/10/2024 08:26:45 PM00:54
[INFO] [checkstyle] Running Checkstyle 10.18.3-SNAPSHOT on 141 files00:56
[ERROR] [checkstyle] [ERROR] sevntu/checkstyle/checks/annotation/ForbidAnnotationElementValueCheck.java:34:4:
    Redundant <p> tag. [JavadocParagraph]00:59
[ERROR] [checkstyle] [ERROR] sevntu/checkstyle/checks/annotation/ForbidAnnotationElementValueCheck.java:45:4:
    <p> tag should be preceded with an empty line. [JavadocParagraph]00:59
...

https://checkstyle.semaphoreci.com/jobs/808b67ff-760f-438b-9baf-a11607a38637

removal of P tag from first block of text causes Element 'subsection' cannot have character [children], because the type's content type is element-only., it is limitation of Xdoc files that we are using, workaround is change P to DIV
see details at checkstyle/checkstyle#15764 (comment)

[Zopsss]

pls assign this issue to me. I will fix it later.

[romani]

@Zopsss , thanks a lot