Calendar incorrect minutes validation

[polushinmk]

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Plunkr Case (Bug Reports)

https://vbwilqlo.github.stackblitz.io

Current behavior

create p-calendar control with minDate and maxDate restrictions and in timeonly mode.
MaxDate (for example) setted as 4 hours and 0 minutes (04:00)
Click 4 times on hour increment arrow -> control shows 04:00
next click on minute decrement arrow -> control show 04:45

Expected behavior

while clicking on minute decrement arrow date not changed

Minimal reproduction of the problem with instructions

steps to reproduce in Current behaviour section
example:
https://vbwilqlo.github.stackblitz.io

problem on line

primeng/src/app/components/calendar/calendar.ts

Line 1315 in 7db14d3

if (this.maxDate.getMinutes() < minute) {

may be it also affects seconds, not only minutes

What is the motivation / use case for changing the behavior?

bug
Please tell us about your environment:

Windows 10, VS Code, npm, ng serve

• Angular version: 5.X

7.2

• PrimeNG version: 5.X

7.0.5

• Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]

all

• Language: [all | TypeScript X.X | ES6/7 | ES5]
  TS 3
• Node (for AoT issues): node --version =

[polushinmk]

Hi all! Any reaction?
I can give any additional info
small proof example:

<p-calendar [timeOnly]="true" [stepMinute]="15" [readonlyInput]="true" [(ngModel)]="duration" [minDate]="minDuration" [maxDate]="maxDuration"></p-calendar>

public minDuration: Date = new Date(0, 0, 0, 0, 15, 0, 0); // min allowed time is 0:15
public maxDuration: Date = new Date(0, 0, 0, 4, 0, 0, 0); // max allowed time is 4:00

First: choose max hour (in this example 4:00)
Second: click on minute decrement arrow (on increment all works fine, validation works correct)
Result: time will be 4:45 - invalid value

Also I made a PR #7233 which should fix this issue